one thing to consider is unsprung weight. some wheels are heavy, some are light. some are good, some are bad. BBS is an awesome company, i really like the RK-II's. but they are hella expensive. SSR makes sick wheels too, also super expensive, but super light. konig makes relaly light wheels as well.
having heavy wheels will affect your suspension and your braking abilities.
www.tirerack.com has weights for more of their wheels ifyou just clikc on "view close up"