I just had the similiar problem when it came time to buy me a tougher ride. (I keep breaking my "intro" ride.) I had a tight budget and was torn between a Giant 29er and a Kona 26er. I was told that the 29er was a sweet ride and would roll beautifully. I was then asked my riding style which is insanely stupid, and was told to stay with the Kona. I thought about the technical trails I like to ride and couldn’t imagine those big tires being maneuvarable. So I went home on 26ers again.