Hey FP,
What's best is anyones opinion. I am using the ultimate because I'm working with Duane and that's what he recommended. The principle is sound to me. Check out High Tech Performance and talk to Duane. During my pump build he has given me a wealth of information and advice. (FREEBIE) Just ask him and he will be more than happy to tell you about the advantages. Ya want holeshot? He's got it! At least he convinced me. The test will be in the pudding.
Peace Man
CESAR