If they stop making the XR's and the CRF's reliability is a problem, there are other manufacturers out there that make some pretty sweet bikes. KTM, Husky... and just give KTM another year to work the all the kinks out of Husaberg!!! Not to mention the WR450 like Stonewall picked up and Suzuki's off road 450 to come. There's no question that the selection and capability of bikes in the off-road 450 class is only getting better. The new 450X, a possibly new generation 06 aluminum framed WR, KTM of course, the sexy new generation of Husky thumpers, reliable Husabergs(!) and now possible new KXF and RMZ based 450 from Suzuki and Kawi. The problem is, after seeing the reliability and durability limitations of many of the new generation MX-based racing four strokes....I'm not sure if I want a new 450! As a non-motocrossing off road rider, I'm not obliged to limit myself to 450cc and thus require a gazillion revs, mega compression, no oil capacity, skirtless pistons and ti-valves that bury themselves in their seats sending clearances to zero! A CRF600 can make the same or more power reliably and with a lot more torque...thanks to good 'ole fashioned cubic inches. If weight comes in somewhere between those 450's and the current 650R (with a happy button of course) I won't have to think too twice!