[Blind-sysadmins] BitLocker or TrueCrypt for thumb drive encryption

Hello, Does anyone encrypt their thumb drives? I do for traveling purposes, if I'm going through an airport security point if I loose one the finder only gets a thumb drive not my data. Previously I've used TrueCrypt but have just learned BitLocker in 7 pro and up can also do this. Does anyone have any opinions pro or conn for a comparison between BitLocker and TrueCrypt? Thanks. Dave.