Got mine today and have been playing with it for about 4 hours. Initial impressions are that WOW, it is WAAAAAY nicer than my GNex. I was pleasantly surprised because I was expecting a small step up only.
1) MUCH lighter and thinner. Easier on my hands despite me liking big phones.
2) Screen space better laid out so more space for everything. Also love having 7 screens out of the box too so I don't have to install 3rd party like go launcher just to get my 7 screens up.
3) Screen is nicer. Brighter and easier to read outside, even set to relatively low brightness (I had it set to 1/3 up on the sliding bar and could see great outdoors). Inside now at night it is just stunningly brilliant.
4) Camera is MUCH better than my GNext in the dark. Flash is not blowing everything (like my poor dog) to white. While I have a 3rd party camera app, the stock app is quite nice and capable so far.
5) MUCH louder ringtones and louder speakerphone. Thank goodness.
6) Reception seems equal (equally poor, that is, at my house). I wasn't expecting an improvement but I am a little bummed that it is not better.
7) Faster overall. Quicker to open apps, pics, zoom in and out of pix, start up games like Tiny Tower, etc.
8) Nice touches with the double tap to scroll to the top. Still exploring the other motion triggered actions but prob won't be using them much.
9) Setup was easy and trouble free. Activate SIM card BEFORE turning on phone to make sure it will work correctly. I also like having removable SD card again. Missed it on my GNex.
10) Nicer keyboard and better "swype" type functions so far. Phone also just feels slicker. Can't explain except to say that it's a personal yummyness feeling when using the phone to do things.
11) Love how the scroll down information bar has so many things you can adjust (like brightness, sound, GPS, Bluetooth, power saving, etc plus a shortcut to the settings button)
12) Thank you to whomever put back the longpress on the home screen to add an icon or widget again. Never understood why it was removed on the GNex.
13) Pretty minimal bloatware surprisingly. VCast, VZW Navigator, some video player, My Verizon, and Music Hub? That's about it. Will try to hide in a folder if that's possible...
Biggest thing: AMAZING BATTERY LIFE! Have been using it for 3 1/2 hours basically nonstop including phone calls, downloading apps, rearranging the screen icons, etc and the thing is still at 65% battery life. And I didn't bother to charge it all the way because I got impatient, only to about 80%. YIPEEEE. This is a huge one for me.
VERY happy so far. Thinking of selling GNex and buying DD the S3 also since it's so much lighter and the battery life is so much better!
Katherine