Really enjoying my Kobo Sage after putting it through its paces for the last week and a half or so. I was looking for an ergonomic alternative to the Kindle Oasis, as I think not having a USB-C port is atrociously dated, and wasn't about to put up with that.

At a quick review, the Sage does everything I want it to. Fantastic screen, adjusts between blue and orange lighting automatically, it feels sturdy and stable, well-made. The buttons and grip allow for me to use and read while doing all sorts of things, and the foldable cover is wonderful for propping up and looking at while occupied with both hands. The store is perfectly serviceable, though I've just been side-loading my existing ebooks through Calibre, which is an absolute breeze.

The big thing people ask about is battery life. There was a slight known issue with battery life, and I feel that it has been resolved to a very acceptable level. The overall battery capacity is a little less than desired, so I knocked a star off, but it should be wonderful for those who are simply using this as a reading device. Update the firmware, fully power cycle a couple of times, and I'm now getting several days of reading out of it, probably 3+ hours per day, before getting low. Keep bluetooth and wifi off unless needed, and you'll be fine. My understanding is that annotations and writing will significantly reduce battery life, so please keep that in mind - I would not recommend this for writing.

Pros:

Ergonomic and high-quality feeling
Screen brightness and quality are very high
The side-grip is an absolute godsend, compared to normal ereader models. I love it just like the Oasis.
USB-C (yay)

Minor gripes:

Sometimes the screen rotation is a bit slow. I suspect the gyroscope is slightly lower quality, but it doesn't take much beyond a firmer tilt to fix, so this is a non-issue for me.

The only other problem I've run into has only happened once, so I can't yet say if it's a problem or just a minor but that occurred, but the screen did stop responding once, along with the buttons, and I had to turn it off and on again to resolve.

Expensive

Ultimately, I'm quite happy with the purchase, and would happily buy another, assuming that this one stands the test of time.

Good!

Until last night, I loved this little reader that was great was just the right size. The letters were nice and big and I could read little walkie with changing pages but it would eventually change it wasn't sensitive to touch and yet it's supposed to be able to use with the fan. I didn't buy the pen yet. I guess I'm glad I didn't because it quit working now. I'm trying to charge it hoping that's what it is. And then I'm gonna try troubleshooting it. But if not, it is on the thirtieth, it was exactly 30 days old and today's only the third, so I'm really unhappy that it quit working.

Going to make this simple.

Positives:
- Nice big screen, the backlight level is the same across the screen. There are no spots that are brighter/dimmer than others.
- Buttons are really nice to use. I thought I would mainly use the touchscreen but I've mainly used the buttons.
- Simple user interface makes finding books and notes an easy task.
- Screen transition can be very quick. One of the best typing experiences I've had on an e-Reader.
- Can easily transfer large libraries over.

Neutral (Things that do not bother me but might bother others):
- There are a number of settings for getting books exactly the way one wishes, but it is lacking in settings compared to some other e-Readers like the Onyx boox.
- Sometimes the page transitions can be slow especially during wake up and sleep, but pretty fast when going through books.
- The battery life wasn't too bad at first (about 4% to 6% every hour). Fortunately, I decided to do a factory reset, since some were saying it helped, and this definitely helped me. I am now only draining anywhere from 1% to 3% per hour (WiFi, sync, and Bluetooth are off with brightness anywhere between 5% to 20%).

Negatives:
- I have had the user interface glitch up on me multiple times, but I only needed to put it to sleep and wake it and it fixed it. However, I have not had any problems yet after the update.
- Slightly heavier than what I was expecting. I didn't think too much about it until I held it in one hand for about 45 minutes.
- Not a huge fan of the feel/plastic cover, but it does grip well in hand.

Overall, my favorite e-Reader and I hope it continues to get better with future updates.

Look everybody is complaining about the battery. I just don't see it? They've done a few software updates and the battery life is good. Not great not bad just good. Down load or side load your books and turn off the wifi. Plenty of battery life. The Sage has dropbox support which makes loading books on the Sage a breeze. The read quality/options are outstanding. The availability of free books is second to none. IDK, I like Kindle but Kobo has so much more freedom to download and share books not to mention the library. Now, Kindle is catching up on the free library book depending on your library. Kindle is easier to use at first but costly and they push push push books. I don't like that. Kobo does as well but not nearly as pushy. I had the paper white sig edition and loved it for sure but, I prefer the ecosystem of Kobo. I use Audible for audio books and Kobo for ebooks the perfect compromise for my tastes. Plus the Calibre app for Kobo is the best and its free.
One last thing dropbox support is worth the extra few bucks for the Sage. Note taking as a need = Meh.... I read a book and I move on to the next book. Taking notes??? are ok but i'm not in school anymore. Chances are I wont read that book again to even see my notes. It's nice to able take notes on your Sage to collect your thoughts or if your at a presentation. Amazon has the scribe now so its all really do you want the Amazon ecosystem or Kobo's. All the best.