I actually like the WRX. They are not slow, you can pass people, but they are at best quick without a lot of work. I would probably want the wagon myself for the room, a bike rack some where on it, maybe a kayak or something.
All to often I hear little kids creaming their pants over normal WRX non STIs. They are quick, not fast. There are a TON of faster cars out there that have been around since the 80's. Hell even the STI is not god like fast either, but fast enough to out run about any cop car besides a B4C. Their true calling is rallying, yup, all wheel drive in the dirt!
Beating down an old muscle car is not hard, most of them where gutless if you ask me. However when you update them say like Marbles did they can get wild in a short amount of money and simpleness. There are a few exceptions of course to those cars, back in the day, that are fast.
I remember someone on here, or DIY forum, a little while ago, had his stock system replaced in a vehicle and ended up hating the turn out! It is funny how that works huh? Stock systems are not that bad usually. Just got to tweak them

. Upgrading is a hard game because there are maybe a handful of retail shops that know anything, or sell anything good. Also really decieving is the higher in price with crappy brands does not always mean better sound! It often just means bigger and louder is about all.