Another vote for the 300 here. I also came off a KDX, and after my first jaunt in the woods yesterday on the KTM I must say that it's the best money i've ever spent on a bike. I made it up a hill yesterday that undoubtedly would have left me kicking and cussing that KDX. I even had to stop halfway up to wait for another guy who had fallen. On the KDX, I would have just turned back around and went down to try again. On the KTM, I just cranked her up and went right on up the rest of the way. It really is a fantastic bike in the hilly stuff.