^ yeah it's a tough call. I like tinkering and modding. It's not THE deciding factor but I'd definitely like the option. From what I've seen/read a resonator delete, CAI, dump, and tune would probably be enough for a 250/265. A WRX would need all of that, as well as suspension, sways, and brakes to be comparable, but would have significantly more potential for power increases.
I've spent a lot of time on those roads in RWD / AWD / FWD and bikes and don't really have a preference. RWD is great for flicking the rear in the Gorge, but the hairpins are very frustrating on a bike. FWD is just so easy and fun to drive quickly anywhere.