I am happy with mine. And I finally was able to get through a 14-day return period with a G4, with no outstanding issues, so I'm keeping this one.
It's not perfect. The battery life could be better, and I've gotten widely-varying SOT, even though I don't do any gaming (so no really-intensive use).
I do get some intermittent lag when going back to the Home screens, a pause before the icons are displayed again. It seems like the launcher either stops running, or quietly crashes, sometimes? This morning I had just been at the Home screen, I opened Waze, then went back to Home. It paused a second or two at a blank screen with just my wallpaper, then the Home screen reappeared, but I noticed that the Accuweather widget on the main Home screen did its little "startup" animation. Making me think that things were starting fresh, rather than just being delayed at showing me the normal Home screen again. It gave the impression of when you have to kill, then manually re-run, Explorer.exe in Windows.
This doesn't usually happen, but I might get it once a day or so. Weird, and kind of annoying, but I hope a software tweak can fix it. I haven't tried Nova yet, either.
But I like the screen, and I've gotten accustomed to the bulk. I like the camera, and the manual capabilities. I have not rooted it yet, but I'm hoping that will allow some battery-life improvements.