first off it all depends on the class
second a good model to go buy is 30% crit unbuffed so 35% with sniper buff
thrid surge is a whole new animal, you get hit pretty hard with diminishing returns after 75% surge... but it still helps
My pt has 79.81% surge and my GM's has around 77... i out parsed him by 130dps last night.
last accuracy... lot of classes this isnt even needed check your class forums
Wow, by having that much surge you must have almost zero accuracy. You do relise that you could sacrifce about 4% damage everytime you crit, for nearly 10% extra damage on all your attacks (against an operations level target)