For me, when I buy, reserve price doesn't usually affect my decision to bid or not...unless there are two of the same product, 1 with, 1 without, then I'll go with the product without a reserve.
As a seller, I rarely use reserves. It drives your listing costs up significantly, and I only use it on the occasionaly item that I know can sell for X amount, but might not the first lising due to fluctuating buyers. As I said, this is rare for me.
My two cents