There's a lot of talk about strength, rigidity, lateral crushing capacity, amount of eagle feathers, and number of speed holes on this forum, but I'm willing to bet that almost any rim of reasonable quality is good enough for the riding people around here do. Or anywhere for that matter. I have Aeroheads and they're great. They look nice, they stay nice, and they ride well. What more could I want? I've seen Open Pros and they look *****in'.
I do want a pair of those nice Ambrosio rims with the little gold plaque thing for my town ride, but again, pure aesthetics.