Well I love my IS-F but I have to be honest. I got my butt handed to me by a WRX-STI wagon!!!! I know it was tuned and applaud the car as it was soooo quick. I will say though that the ISF is very quick and its a very well complimented car where as the Subaru is not. On the other hand there is hardly any after-market add ons unlike the WRX which I envy. Its all good, and either M3 or IS-F is comparable. I will agree the looks and interior of the IS-F are much more sinister looking. Nice to have you around and good luck.