Different Pipe Question

[Cody_300ex]

Im looking into buying a pipe here soon and in was woudering if any of the engine builder pipes would give me some good top end if so which one? If none of the engine builder pipes would give any top end, which pipe would?

[sweet300ex]

the sparks pipes are supposed to be good for top end

dmc alien

sparks x-6 for sure

[Diedrich]

dmc aliens give alot of top end. mines for sale if u want one