first my DumpsterMutt because it's so tough and easy to carry (I think I trust it for just about anything!)
then my DogfatherCG because it's just tough! (and my buddy Tom named it! <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" /> )

their are lots of great beater/user blades out there but pair that with res-c handles to absorb the shock and you've got a winner!