Just my op..
I use 3 lpf carbons and recently put a blue pro in the x6..Wow.. the pro is soooo much smoother and punchier.. that said i've never had a moments trouble with any of the sp speedos..Wish i could say that about the numerous others that have died, shorted internally or gone intermittantly faulty(which imo is the worst) Hope this helps.. just my op
