I commute about 10 miles round trip, all year in Boston. I have no car so the bike is my only viable source of transportation except for the bus. I have been getting by with generic rain/winter clothing for the most part. I see people out in fancy stuff they have bought from the bike store and have wondered if there is much of an advantage to wearing that equipment. I don't have much money, so what would be a good first purchase to get a chance to try out the benefits of bike specific clothes.