Well, for REALLY large knives, I like Cold Steel.

X2 with Dumpster Mutt


In the same blade length is the Rajah, which Horn Dog bought and said he likes.

Then if you want a REALLY big knife, there's the XL Espada. It has a 7.5" blade, with an overall length of 16 3/4"!!! <img src="/ubbthreads/images/graemlins/ooo.gif" alt="" />