My Oasis 2 arrived a few days ago, and my first reaction after having it only an hour was - It's gorgeous! Below are my feelings after actually using it for days. I'm retired and have already read three books on it.
I'm still enchanted. The screen is perfect. If there is a gradient or other imperfections, I can't see them. One of the things I didn't much care for on the Voyage was the blindingly white screen. The softer cream tone of the O1 is much better for me, and this O2 is like that too. The extra size of the screen is wonderful and to me seems more than kinda sorta or slight. I get an extra 2 or 3 words per line and an extra 3 lines per screen, and I keep mine at the middle setting for line spacing.
I love that there's a setting to make the font bigger on the Home screen (and give the battery as a percentage). The improvements in the last firmware upgrade to the O1 allowing font bolding, etc., were great on the O1 and are here too.
My Fintie case only came yesterday afternoon, so I used the O2 without a case for several days and had no trouble holding it, although I can't hold any Kindle for long periods any more because of arthritis in my hands. It seemed as if for someone whose hands aren't a problem it would be quite comfortable. Didn't seem either cold or too slippery for that to me.
Where it did seem too slippery was when I put it down anywhere except on a totally flat surface like a table. I have a bad habit of putting mine down on the arm of my recliner, and the O2 reacted as if on a ski slope when I did that.
The buttons don't seem loud to me. I held it right to my ear and could hear a faint click on the upper button, nothing on the lower. Admittedly those are my Donald Duck ears, but I had my hearing aids in.
The auto light adjustment works, which it never did for me on the Voyage, but I've turned it off. It seems I like to position my hands in ways that get between the light source and the sensor every so often and don't realize it until my screen starts turning gray. It's easier to turn off the auto adjustment and do it manually than try to break myself of hand movement.
I got the 8 GB model with special offers, which was a mistake. Another half dozen swipes to wake will undoubtedly have me forking over the extra $20 to get rid of the SO. I shouldn't have even pretended to myself I'd be able to stand them for long.
The audio stuff is of no interest to me, so I have no opinion there. Ditto Goodreads integration. I tried the reverse screen just to see what it looked like, and it looked clear and well done, but it's not something I'd ever use either.
It's fast. It seems to me not only faster for things like page turn but that books download faster too, which has to be my imagination because that's up to the wifi, right?
I like the buttons more than those on the OA1, which always seemed unnecessarily high to me.
It is noticeably heavier than the OA1 and the Fintie case makes it even more so. Someone asked for a report on 3d party cases, and I'm going to report on the case in the thread on covers. However, since I don't plan on hand-holding the O2 often or for long the extra bit of weight doesn't matter to me. Also, since I always worry about losing a Kindle if I take it out and about I've never taken my newest and favorite out with me, so the OA1 will now be the one that goes places anyway. I traded my Voyage to Amazon before ordering the OA2.
The original partial charge already on the device when I got it did drain fast, but since then (after a restart and complete charge where it sat for a couple hours after 100% - recommended in a KBoards thread) it seems good to me - better than my OA1 in its cover, but I never timed either one and can't be sure. Maybe if the OA1 didn't start complaining about low battery when the device itself still has hours of charge and only the cover is low, that wouldn't be true.