ITR for sure.
WRX is quick, has turbo so extra power will be easier to get out of it.
Mates got a WRX and i got the ITR
WRX good low down torque but for a real enthusiasts driving experience, nothing compares the high revving NA feel and handling only the ITR can give.
The ITR will out handle the WRX aswell.
WRX has no top end and AWD effects top end even more.
If your a straight line driver or enjoy the occasional rally course go the WRX.
You want something unique that raises a tent in your pants as the tacho screams to stratospheric heights as you blast the twisties at 8000rpm, go the ITR.