Another one...
For contrast, these are 14". IMO, although not stock, the 15" look better and you'll get better handling. Also you'll be able to put wider tires out back (like 275, some have put 295 out back but that's pretty tight...) , increased selection of tire sizes, etc...
I went with the stock look. Plus I got the set of rims with tires for $100 so I couldn't refuse!