The performance of the KTM is epic and it puts out lots of power-more than enough for this sap. I would have liked to mess with the gearing a tad more, yet these were minor issues. Low-end jetting can be a little finicky to temperature changes or season changes so we put on an adjustable leak jet as well as a finger-adjustable fuel screw. The chassis is fun to ride-very stable and predictable. Yet the chassis can also feel a little harsh at times, not as forgiving when it comes to hard landings and square-edged bumps compared to some of the aluminum chassis I've ridden. On one hand I like the feel, feedback, and control but on the other hand it almost offers up a tad too much feedback, yet I would still own one of these bikes.I would say that the 2011 KTM is a solid machine and would make a good used bike buy if I were looking to save money and still wanted a current model. The 2012 is almost identical except for the clutch and some suspension settings. No, it is not fuel injected but who cares? The power is ample and makes you feel like a hero when you twist the throttle. The only real shortcomings on the 2011 450 SX-F is probably the rims, the clutch basket, and the fact the sucker has a bunch of 13mm bolts all over the bike. And even after the hours we spent on the bike it still felt as solid as when it was new and didn't even show a hit of feeling starting to feel clapped out.