Ive had 2 CC BECs fail on me now. One went up in smoke, but did no other damage. The other took out a $100 servo and $90 Rx.
I was running a few of these cheap ones for a long time (years) prior to getting the CC BEC and have yet to have one fail. When the CC units died, these trusty fellows went back into service and I havent looked back. For $15 you can beat them.
http://www.helidirect.com/product_in...oducts_id=1158
I hate to link to outside stores, If Mike carried them I'd buy them from him.