For a sheath knife I have come to love Cold Steel and Fallkniven. In the folder catagory I really like Spyderco.

Some other brands that I have had good luck with and I think are great values; CRKT, Bark River, and for a big chopper NOTHING beats my RTAK (Randall Training and Adventure Knife, now called ESEE - Junglas)

Regards,
Rob