I'm finally going to dump the 20-year-old beater I've been commuting on for the past five years. I'm up for spending $500 to $600 for a single-speed commuter. The guy at the bike store recommended the Brougham. Keep in mind, I don't know **** about bikes--but I ride year-round, so I want a bike to be fast, dependable, etc. What's the best value at that price point? Thanks for any help!