I like the ease of use and the way this air popper swirls the kernals leaving hardly and unpopped kernals.

So far, so good! I just got it, cleaned it, and did the 2 minute warm-up, which is probably pretty important to clearing and burning-off any residue before making popcorn. When I poured the carefully measured popcorn in and turned it on I was anxious and waiting for anything to happen. Some un-popped kernels flew out to begin with (about 20 I'd guess) and then it settled into the heat-cycle and started popping the rest. Big, perfect popcorn followed until it stopped popping, I turned it off and emptied the rest of the chamber into my bowl. The serving was just right for the bowl I used and after a little garlic salt I'm good to go. It all works!
Yay! Now I can eat more delicious popcorn without the adverse effects of all that oil. There's no after-taste of the hot-air process that I notice, which was on my checklist since it still seems miraculous that such a small device works so well.
EDIT: (12 hours later) OK, I made a mistake in the procedure. You're supposed to turn it on for 2 minutes to preheat it, then turn it off, quickly add the popcorn into the popping chamber, turn it back on and get your popcorn. That works much better!
The initial instructions are confusing because it smells when you first turn it on out of the box (for 2 minutes) so I didn't connect that with the NORMAL operation, but only with something you do initially to prepare it for later use. BUT You do that first, to remove any unwanted residue from the heating element, THEN every time you use it, turn it on for 2 minutes to preheat, put in the kernels and have your bowl ready under the popcorn exit chute.
I have a problem with the measuring lid. (IT'S IMPORTANT to get just the right amount of popcorn into the popping chamber or it won't work right, but the measuring lid is hard to use.) The mark is difficult to see and a large flat volume is more difficult to measure than a tall cylinder or an actual measuring cup. >>>It takes 6 table spoons to fill the chamber.

I like, quiet area is good and on the go.

Works great as a popcorn roaster. Popcorn comes shooting out like it is supposed to do...

For coffee, it doesn't have quite enough airflow to keep the beans moving until after first crack, so I have to hold the roaster and gently shake it to keep the beans moving, or the ones on the bottom will burn/char.

After first crack, when the beans are a little less dense from the expansion, then they move well enough in the airflow from the fan and I can set the roaster down.

Max it will do for me is 3 ounces. Takes about 10 minutes, which is pretty ideal.

Caveat: if you do it on a long/cheap extension cord, you'll have too much voltage drop to roast coffee and it won't have enough heat or airflow. It only really works for me if I plug it straight into the wall, or use a short/high quality extension cord with thicker gauge conductors. It would probably work for popcorn no matter what kind of extension cord you use.

Love it