Should I be looking at KTM's instead? I've looked at them a little but I've heard that same thing about parts and stuff being hard to find and more expensive, is this really true? I've been a Yamy fan for years as well as a Honda fan, and I'm even looking at CRF450's, are they a good bike?
I think if you rounded up all the sane and reasonably objective TTalkers and polled them you'd find that it amounts to picking your favorite color. There are no real universal advantages, all bikes have their occational warts.
The CRF is the intake valves
KTM is the cam bearings
WR is the woodruff key
I have an '03 CRF. Great bike, very versatile. A friend has a 525 SX that we converted to a 6 speed. Great bike, but I like my rear suspension
better, OTOH I'm sure there is a lot of room for improvement (ala Race Tech revalve
or similar). The WR is heavy, but it does have the e button. The EXC does too and is probably lighter.
Before you pull your hair out trying to decide (I did), consider your local supply of dealers. Depending upon your situation that may be more of a factor than anything else...