Welp...Picked up up the phone yesterday morning and spent most of the day playing around.
Disappointingly, it hasn't blown me away. It's been a few years since I've used Android, so early frustration is part of it. There's a learning curve. But...
1) Styling. Probably been talked about a lot, but even with the black leather back it feels cheap in the hand and I don't find it comfortable to hold.
2) WiFi is unreliable. I'm never sure if it's connected or not unless I try to pull some data. I'll do a couple things with my router.
3) I was probably expecting too much from the screen, but it's nothing special. It looks as good as any other to my eyes.
4) I wasn't sure about buttons on the back. I can now say I'm not a fan. Almost dropped the phone a couple of times trying to reach them. And I have big hands.
5) This is my own fault: according to XDA this model (H812) can't be rooted. I was looking forward to playing with custom ROMs etc. I didn't research well enough.
But, and this is huge, the phone is fast and lag free. There are some issues with vertical scrolling in some apps (Play store is horrible...but, I think that's the app and not the phone as it does the same thing on my old nexus 7). Haven't played with the camera much yet, but I don't have concerns there.
Anyway, long story short, I have two weeks for making a return, so I'll give it some time before I make a final judgement. But, as I said, I'm disappointed thus far.
Ah well.