OP, did your wife have a rooted Atrix 4G that you sold on ebay a few months back? If so, I'm pretty sure I was the buyer!
Anyway, my Atrix came unlocked and rooted with Neutrino (CM7) flashed. I installed GO Launcher (perhaps negating the quickness Neutrino intended), but I love it.
Best part, I am on T-mobile, so when I got the phone a few months back, it wouldn't work on 4G; but now that T-Mobile has rolled out their new band to attract iPhone users (1900 I believe), I get HSPA+ almost everywhere I go. Of course now, apparently, unlocking a new phone is illegal so all T-mobile's work may have been for naught.
As a total noob when I bought the phone, I was happy to have it pre-rooted and flashed, and Neutrino served quite well - simple, fast but highly customizable. I was terrified of the thought of "bricking" my phone, but I was quite fed up with the Motoblur crap that had seriously bogged down my previous phone (cliq xt, which I rooted myself later on

).