Tire Rack has some really nice 18" BFG tires on sale right now so I pulled the trigger.
I didn't want blinged out wheels and was looking for something with more of a factory look, just more modern. I am EXTREMELY happy with this wheel and tire combo. The ride quality was hardly affected and the car feels slightly more stiff (an improvement to me). The new wheels and tires are really close (within .75 of an inch) to being the same overall diameter as the factory wheels and tires, so not much changed.
Stock: 225/60/16
Now: 235/50/18
Tire Rack was awesome and I can't say enough good things about them. While I wasn't thrilled about paying $100 for shipping, I did get the tires and wheels (mounted and balanced for free!) next day because they were shipped from Georgia.