I have a WR250R and my brother has the CRF250L.
I have ridden his bike on several occasions and I really like the torque of the motor down low. Makes the bike very controllable at low speed. I was surprised that the bike did not feel as heavy as it is so I think the weight must be centered a bit lower than say the WRR.
However, the suspension is just not on par with the WRR. Apparently the CRF only uses a spring in one of the forks as a cost savings measure. With only one spring you are limited to how far you can go with setting sag before you have to go to a two spring setup especially if you are a big guy.
One thing he has struggled with on that bike is head shake when ever he hits 60 to 65 MPH. He has been through the whole front end and looks like a dynamic balance has allowed him to delay the head shake to 70 MPH which is probably just fine. IMHO if there was a decent suspension package on that bike this would not be a concern. I have also seen this same issue when riding behind another CRF when we were slabbing it between trails. The rider could not really go much more than 60 before the front end really began the death shake.
In the end I think the CRF is a great starter bike and is very forgiving to learn on. But if you are already and experienced rider I think you may be disappointed by the suspension and will be looking to upgrade it fairly quickly.
2010 Beta 520 RR
2001 GasGas XC250