535whp R35 GTR for me. I miss the kick in the seat acceleration and sometimes the brutal AWD grip from the GTR but the BRZ fulfills almost everything else I want from a car.
The mods are so much cheaper, the thrills on the track are still there, stirring a stick >>> paddle shifting (no matter how bad I am at it lol). I'll probably aim to get to 300whp with the car like some of the folks above me but out of the box, the BRZ is fantastic!
Edit: One last note - I have to say the community for this car is amazing as well. I've never seen a more friendly and supportive group of folks around a car like this before. You guys are awesome