I've been looking at buying a pair of black DP18 wheels off of ebay, the only thing really stopping me is that I plan on using a front brake for the time being, and none of them have machined sidewalls. How big of a difference do machined sidewalls make vs. non-machined ones? Will I be alright using brakes on the non-machined ones?
some people will say there is almost no difference in braking power. i'm not so sure those people are correct. is the brake going to be your primary stopping method? if it is then i would try to find some machined rims. i have a brake on nonmachined rims but i rely on resisting for most of my slowing/stopping. the only time i really notice any disadvantage to having nonmachined rims is when it is wet, you can still stop but your brakes will squeak like crazy.