If I had to pick one of the other two over the Nexus for whatever reason, I suppose I'd take the Razr. I think HTC makes products that physically look and feel nice, but from what I've seen, they often skimp on the battery, which is a bit of an annoyance for me.
The Razr looks very nice, and they managed to squeeze an 1800 mAH battery in there, which would be pretty good for me (still hoping the Nexus has at least 1750, if not more; I don't think we've seen any official confirmation of the battery specs for it, yet, have we?).
I doubt I'd like Blur much, though, but to be fair, I don't really like Sense much, either. But, much like with my Thunderbolt, I'd probably just run Go Launcher, anyway, if I got a Razr.