Top end gasket kit

Since I'm taking of the head and barrels, who makes the best top-end gasket kit? And is there anything else I should do while I've got it apart? (Remember, I AM on a budget)

I thought Vesrah were the best. The Athena kit I got was poor.

this guy get the specs and stamps his own gaskets stores.ebay.com/jaquishmotorsports

Go with genuine Kawasaki parts if possible. I used the Viton valve seals (Kawasaki seals were $10 a piece).