x-drilled Vs. vented...or both???

[Eurolook71]

I'm working out ideas for my future eurolooker, and have been thinkin about brakes. Tell me, who doesnt like the look of x-drilled rotors(uhhh no one), but whats the real benefits vursus vented rotors. I know most hi-perf rotors, (ex. posche, duh) but lots of companies offer either or. I've been looking at CSPs kits, and they offer...

x-drilled, NOT vented, 4x100 (the PCD I'm wanting) for $525
vented, NOT x-drilled, same PCD, for $538
-or-
x-drilled/vented kit for $667, thats another $70 for x-drilling each rotor!!

I'm trying to budget this all out, and still get what I want, but I'm curious, what would you guys go for??