hehe... I was kind of thinking the same as you.... in some pics, some rims, do look ok in 18". There is quite a difference in price between them....
its a tough one.... however most of these rims I see in 18" would need different size tires than stock anyways from what I understand.
08 - M3 Sparkling Graphite/blk leather/tech/6 speed
08 - 335i Sport/Prem/Auto White/Terra - AA Exhaust
07 Acura MDX Tech, 07 G35S /Nav