What's the Difference 4" Stroker CRANK??

Just so everyone knows, I don't want to go the cheapest route. I want a crank that is suited for what I plan to use it for. Not the most expensive and not the cheapest either. I figured somewhere between $400-$575 was reasonable for what I'm looking at engine-wise. I do have some pretty wide tires and a new posi (3.73 gears) plus the super low 2004R first gear...so the engine will see some load when I launch it, but I probably will never completely floor it from a dead standstill.
When the light turns green I want to be first out of the box!!!:burnout:
Treblig