The 3670 is around $150 less than the 3695 though :L: So do you think that a 16 or 17XL would be better? Hmm.. I could always take a look at those bigger 580 sized feigao's, the specs of one of them is: Tango 45-08, 800KV, 45A constant, max of 70A surge, max of 30 cells.. Another one has 640 KV, 40A constant, 60A max surge, max of 32 cells.