well hopefully i don't get attacked too much for this but i think i have to be the first to say i like the 15x8's better on your car brett......
1. the 15x8's argent grey works much better with the color scheme of your car. the color on the 17x9's looks almost black, the lighter argent really sets off the rim. (maybe a color change on the 17x9's to the argent?)
2. as mentioned, the raised white letters of the 15" tires is more "correct" for these cars when they are in near stock form. rwl helps break up the blackness of the tires, especially on a black car with black-ish rims.
3. the extra height of the car the rims create almost starts to look like some cars out there with "dubs" (20" rims) kills the original stance these cars have.
don't get me wrong, the 17's are a very nice rim & they did a great job of keeping the original design intact, however, on a stock looking t/a such as brett's they just don't work as well as the 15x8's with classic rwl tires, IMHO.
now if someone had a modified looking car such as a pro-touring or "g-machine" they would probably look much much better. something lowered down alot & not as stock appearing.
regardless, it looks nice either way but i have to say i prefer the 15's with regular tires. especially the argent 15's....they look awsome with your decal colors!