I personally stay in the 15 16 range because that's where I'm comfortable and i dont worry about having no sidewall and i also like to have the option of going with regular tires instead of low profile tires in case money is tight. I
All in all if you put some thought and effort in to it your car will look great no matter what wheel size you have
I agree to all this... I prefer to have the option of a regular tire, especially when I can't always afford the low pros... I have a 92 bmw 325i with 18" wheels, and I think it rides like crap on them! Sure they look good, but on bumpy roads, it feels like you are on wagon wheels... Plus, tires on those wheels are like minimum of 600... The cheap ass tires they have were 800...
If money is an issue, which it always isn't, I would say, go with 15 or 16" wheels... I prefer both! I also have some favorite 14" wheels also... BBS mesh rims are great in 14" with a polished lip, and black webbing!