I'm starting to get the bug to upgrade my 98KX250. Definitely want a 4 stroke. I strictly ride MX. Why don't I ever see any 525SX's at the track. I see a sea of CRF's and YZF's, but never any 525's. Are these bikes not good for MX or are they just rare? I'd love to be a little different and ride a KTM, but I'm concerned that their popularity, or lack thereof, at the MX track is indicative of the bike. What's going on here?