I'm with Kelly, I'm a huge fan of drop points and spear points.
Why? Personal preference I suppose. It is a mighty strong configuration if you need to do any serious penetration testing.
For the bigger knives I'm also a huge fan of the recurve grind. The Sasquatch shape touches a lot of "oh goody" points with me.
Middle knife is from Amy over at Warlander.
Bottom knife is the Trail of Tears knife from Ray Kirk, handle made from Osage Orange/hedgeapple/Bois d'arc ("bodark").