dbarnblatt, that list is spot on. If all you're ever going to run is 225/45-17, there is no reason to get 17x8 wheels vs 17x7.5, unless you like the stretched look.
The '05-06 STI (with 8" wheels) has the unusually wide RE070, which is 235mm wide, despite the number printed on the sidewall, so that is a bit of an exception.