I need a bike that I can commute with and do general riding on the road and occasionally in the dirt that is reliable and simple. I'm thinking: 1) 29er single speed w/ a rigid or short travel fork. 2) Single speed cross bike a la Bianchi San Jose. (although those are a bit small) 3) ????? I'm 6'3" (almost 6'4") and my frame size is "big". (61-63cm or "XL" depending on the make). Throw suggestions out. I'm open to anything. I don't have anything in particular in mind. Open field.