I've had the AT&T G2 for a couple months. It's the best phone I've ever used for an extended period of time (GS2 Skyrocket, GS3, GS4, HTC One).
Pros: Amazing screen (very bright), great battery life (6-8 hrs. screen on time), very good camera, fast charging (1-1.5 hrs.), functional back buttons (control music, camera, etc.), good call quality, very easy to root (<20 min. w/ ioroot), impressive specs (no lag at all)
Cons: UI not as clean as on N5 (easily fixed with rooting and Xposed or custom ROM), low headphone & speaker volume (fixed with Xposed mod), slow camera focus (fixed with xdabbeb's cam mod), unimpressive voice recording quality, bloatware (freeze/remove after rooting)
I was quite pleased with the phone when I first got it. I now absolutely love the phone after rooting, customizing the UI with Xposed, and removing bloatware.