Your asking about several different types of knives, all of which have a different purpose.
Kukri - a good chopper of clearing small trees and brush. The curved edge makes it good for slicing through undergrowth.
Bowie knife - large, oversized knife.
Personally, I do not have any use for a bowie. Yea they look nice, but their too short to be used to clean brush and too long to make a good skinning knife.
In my opinion, the best survival knife is going to have about a 3 - 5 inch blade. Something like the
Gerber Big Rock would make a good choice.
I have a cold steel recon scout, which has a 7 1/2 inch long blade. The cold steel recon scout is "awkward" when skinning a deer. The blade is just too long to make fine cuts when you are separating the hide from the meat.
My pocket knife with a 2 3/4 inch long blade makes a better skinning knife then the knife with a 7 1/2 inch long blade. Just because its easier to handle, and easier to make finer cuts.