Voice Caddie SC 100 is a very impressive information tool. I have used this device one day at the driving range. I hit 3 baskets of balls and 98% of the hits displayed information. The bad hits (ground balls, shanks, skulls, etc.) did not register. I am close to 70 years old so loved how simple this is to use - just put it 4 feet behind the ball and turn it on. Right out of box remote did not work, but replace the battery (cr 2025) and it works fine. You have to remove the plastic film protecting the whole face of the VC SC 100 for the radar and remote to work properly. I was hitting the ball consistently 20 to 30 yards further than the VC SC100 would indicated -- but then realized I was on an ELEVATED TEE - the device just gives distance based on ball speed and angle of ascent - it does not know I am 10 feet above ground and have extra flight time before ball hits the ground. People on both sides of me wanted to know what device displayed so showed them - everyone impressed.

I had mixed emotions about this purchase, but with the sale price I had to pull the trigger. I noticed that most of the negative reviews where for two reasons. One the unit does not pick up all shots. After testing this unit at the range I had nine shots that the unit did not pick up. Each one of them was a shot that I mishit. Either hit it fat and shot did not carry as expected or skulled it and shot was a low line drive. All other shots read perfectly and are where very helpful. The only clubs I would not recommend using are wedges, but hey that not why you are buying this guy anyway! Secondly the remote not working. I was out in the bright sun and had no issues with the remote reading on the unit. The only thing I could see happening is if someone didn't remove the protective film on the monitor screen itself.
Most of my shots registered within a few yards of actual distance, from time to time it would have a shot much lower that the ball actually traveled. The only thing that I can deduce is that with the newer model with the ability to change loft and has a barometer in it for calibration you may see slight differences. I live in Colorado so altitude could be an issue.
Overall for the price you cannot go wrong. I highly recommend.

This works like a charm and has helped me to improve my game. I was hesitant after reading all the reviews about how the unit didn't perform, but it has worked flawlessly for me and I am happy with it. I use it at home and hit into a net. It tells you the carry distance, not the carry and roll so at first it seems that you aren't hitting well. I like the immediate feedback after hitting a ball and seeing how far the carry is so that I can remember that feeling of a good shot and what I did. It has helped my game, for example after using this with the driver I was able to improve my drives by 25 to 35 yards. I was obviously not doing something right before and with a little practice developed the tempo and muscle memory needed to hit the ball with higher club head speed, it has had a beneficial effect on all my clubs in that the club head speed has increased. I have tried the medicus clubs and other training aids with some success, but this by far is the best training aid with the most immediate results that I have used. I wish I would have bought this a few seasons ago.

I was decently skeptical about this due to mainly the backspin obviously not being tracking by this launch monitor.

But I've found accuracy on distance to be spot on with what I experience from hitting the balls and then using my laser range finder to see the actual distance.

I've even found it to be accurate enough when leaving off the settings regarding which club I'm using, ie hitting a 7i when the swing caddy is set to driver doesn't produce wildly innacurate numbers. I'm guessing that the radar does get some estimation of launch angle, or that the way that it measures sort of compensates for unusual trajectory.

Anyway, carry distances are accurate enough, certainly a lot more accurate than me estimating using my eyes, which makes my time on the range in the evenings a lot more satisfying as it's usually too dark to see the tail end of my hits through the air or where they landed.

I find that swing speed is the less accurate of the two measuresments, which is fine by me, but what that means is that smash factor should also be taken with a grain of salt. The reason I know is that I actually had two of these set up, and while they would often agree on all counts, they would only ever disagree with swing speed. And I find swing speed varying a lot more than carry distance, which if you know how people swing in general, is generally not true (most people have very static swing speeds regardless of what they feel they might be doing differently), there is far greater difference in ball striking, ie smash factor and ball speed.

Anyway, don't hold out for the one that lets you dial in lofts, as I said the club setting doesn't seem to matter greatly and different irons launch differently despite lofts being the same anyway.

I am not a solid swinger or a long hitter by any chance, but here are a couple of useful points of this device.

- Better understanding of true carry distance of your club
I had three practice session in the range with this device and had a round yesterday. Result: with better understanding of carry distances of every club I have, I was able to play better. For example, I knew my 5 wood is longer than 3 hybrid, but didn't know the carry distance of those are about the same. I was able to confirm that I have a higher chance to carry 175 yard with my 3 hybrid than with my 5 wood. I started using high spin balls to better control around the green and this became more important.

- Get to try different swing improvements and measure
With a same club, my experiments with different rhythm of my swings showed that I could hit a ball more consistently longer with a slower club head speed. 76 mph and smash factor of 1.49 is better than 85 mph and smash factor of 1.3 on my 7 iron. On an occasional thin low hit, the device tends to record a higher club speed resulting in a lower smash factor probably it's confused with the ball and the club at the moment. But overall it gives you a feedback that is consistent with how you felt about the shot you made.

- Target mode and Random mode
Through Target mode, I get to confirm on my consistency on each club. Random mode gives me a good exercise on my sand wedge for approach shots. With a little bit of added imagination (like there's a bunker in front of you and only a bit of room on the green), this gives you an intense simulation.

Of course this is a low cost device so there are some drawbacks.
- Like many mentioned in the reviews, this device won't be analyze the distance or club head speed accurately on a bad shot. Low shots carry distance seem correct but the head speeds are off. On a fade or slice, it simply records slower ball speed correctly, but on a pull it records the distance as if they were a perfect shot. So in Practice mode, you're score might not reflect on a bad pull that would cost you a bunker shot to recover in the real game.
- If you forgot to switch the club, it will confuse you. Everytime you switch the club, you should press a button on the remote. Once you get used to it this becomes a minor problem.

Overall, I am very satisfied and convinced this will be a constant coach to my swing and my game in the long run. I recommend anyone hitting 8 out of 10 balls the way you like if not perfect, give it a try.