2006-07 yzf250 or crf250R? which on is better

[crazycarl7]

looking to buy either a 2006 or 2007 yz250f or a crf250r. which one of these bikes are better? I have heard about valve problems with the CR and recalls on the YZ. please help

 

[crazycarl7]

yz 250f crf250r

im mean which one will I have less problems with?

 

[phoneman]

What were the recalls on the yz250f?