see, the thing is, the evo's in north america dont' have the super active yaw control like the ones in the UK, that's the only reason that makes the EVO so fast a track car. so, i'd get the STI and take the 300hp, with active diffs'n intercooler spray buttons, and the better interior. (the evo has the spray button too but with the gear box you can't really tell where u are sometimes if yur rushed....
ps. about the SRT-4, good luck driving that 2.4L 215hp in the winter with that FWD,
as oppose to 2.5L 300hp with active center diff that lets you shift power from 50/50 AWD to 40/60 AWD.