Vintage wheel works offer 18's in some of the wheels and they look really nice, right around $400 for the 18's.
TTII's always look good, the centers of mine are painted a nice gun metal to break up the wheel a bit.
Tons of styles, just depends on the look you're going for. I don't think they look too good but lots of people are running the newer mustang 17's and 18's with spacers. Cheap cheap and all over the local Craigslist.
Dan