Well, my perfect knife would be the RSK in M4 with the new heat treatment with titanium scales and clip. Just in case Santa's lstening. :-)
(Kevin sounds like he'll do another Ti run at some point).
Ugh! This guy has my knife!
http://www.bladeforums.com/forums/showthread.php?p=12250606#post12250606FWIW, the black oxide clips are pretty cool, too.
Oh, I should mention I think the RSK is pretty much perfect the way it is. I love the blade shape, dual thumb studs, blade length, Axis lock.
-john