I have both!! my wife's the rx8 the brut power goes to the xfire hands down the handling though is pretty even the rx goes exactly where u put it a little heavier steering feeling also brakes are excellent i like the options on the rx hid's ect. Oh Bullseye your probably going to be pissed at me but i walked away on a srt4 yesterday finally got to come up on one, beat him 3 out of 3 times it was kinda funny listening to his turbo spiting as i'm going through the gears past him.