Depends how cold you're running. People seem to have had success down to ~ -30 with the xxBWx code chips. Suck it and see perhaps, almost all the X2's seem bugged to some extent, its just a matter of how bad!!
The 06 chips have been clocking quite well, if you can track down a LDBHE they seem to be the better end clock wise, and should be fairly bug free.
