Sticking to the Evo 4G LTE, myself...
SGSIII doesnt necessarily blow it out of the water... It'll come down to interface, and the Evo 4G LTE wins in that department, plus, I'm a sucker for an incredible camera!
Evo 4G LTE also comes out REALLY soon, Sprints iteration of the SGS3 probably won't land until Aug-Nov timeframe... Don't wanna wait that long.