OK, I got the Rezound as an "interim" phone and I will say that I like the phone a lot, with a few reservations. The screen is incredible, the form factor and "heft" are perfect for me. I like the shape (a bit thinner and longer than my Thunderbolt), and the Sense UI is mostly tucked away behind the awesome Launcher Pro, so that is not a real problem. It is super fast an smooth. The camera is a step up from my Thunderbolt, and the speaker audio (which is important to me, since I listen to audio podcasts in the car, and I like not having to plug it into the stereo), is very loud (something they say is lacking in the Nexus).
What IS a problem is the Verizon apps, right now VCast Media Manager won't stop trying to upload something, so I am restarting to wipe it out. It doesn't even show up in the Running apps so I can kill it. Other than that, no problems. (One thing that makes me nervous about the Nexus is that they say these Verizon apps will still be on it!).
I will still likely get the Nexus when it comes out (unless it just feels too light, or there seems to be a lot of problems upon release), I could definitely live with this Rezound. Especially when it gets ICS.