The Best Jointer and Planer Knives?

Hi folks,

Would like your opinion on what you think are the best jointer and planer knives out there. What seems to hold up the best. Looking for either straight HSS or carbide tipped 8" jointer and 15" planer. Whats your thoughts?

Thanks in advance,

Michael

Here were I get mine from. They made from T-1. http://globaltooling.bizhosting.com/planer_knives.html