I just started riding again after 15 years and decided to jump right in with a single speed 29er. Mine is the Gary Fisher Marlin SS,with my first upgrade being the Rock Shox Reba dual air. My Suntour fork was way too heavy. Next on the list are stem,seat,and bars. My girlfriends is a Trek 3700d,with a lot planned in the near future to lighten it up a lot and make it fit her better.