its easy to get sucked into upgrading and modifying.  tbh, the subaru is an absolute madman as standard, i generally use 5th gear for overtakes!!  so something that is a little less manic is definately going to suit me.  however, trying to sell a high performance vehicle at the moment is really difficult.  
what's the Bluefin like in terms of power, mpg, etc?  as soon as i sell my STi and get a golf, i might want a little more power and concentrate on the asthetics.