I've used Bluefly and have never had a bad experience. Good website, reasonably good prices, good return policy, accountable customer service, ete, etc. Yoox, on the other hand, I've never used. I took a look at their site and was impressed by their selection, particularly by the offering of hLam, which is a brand that is hard to find in the U.S. But there were two things I did not like about the website: 1) not user-friendly; 2) pictures are not good or are wrong. For instance, for the latter, they'll show a black shirt, but they'll say only a white is for sale--"um, then a white shirt should be shown." For the former, you have to "click" way too many times, it seems, to get to where you want. Just my 2 cents.