Hi Kenny.
What it all comes down to, is what you want at the end of the day.
If it's defo a 2 door model you want, you'll be paying 8.5k+ for a decent one. First Choice cars have been discussed on here and the general consenssus, was they sold dogs, but i'm not sure myself.
STi's uprated internals and they *should* get over 400hp if taken care of.
Fuel is the tricky thing. Till you get it remapped, it could be bad, or it could already be pretty good. Depends on current mods and how the car is. They seem to vary a bit, you get good and bad standard cars, as you can any other motor. []
If you look in For Sale, Ross is selling his Type-R at the moment.