A lot of people I ride with that ride full suspension actually say they climb faster than HT. My husband would like to rebuild his HT for the non-technical courses on his race schedule but loves his full for the climbing courses or the western parts which are all rocky.
I don't have much suggestion on upgrading just what I have heard from others who went full suspension. I ride a HT right now as my first bike.
Amanda
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan