i have a pipe too, and i like it.
Don't go with a freak, it costs a lot more, and you have to go to smart parts to buy it, and their customer service is crap. Smart parts also have very poor tollerances in their thread milling, so some cocker threads don't fit some guns. (matrixs)
Get a pipe from Piper, and buy it at a millenium event in Europe
The pipe case is cool, but it's a bit bulky.
The only advantage to a freak is you can have it anodized to match your gun and the tolerances stay the same.
Get a pipe, it's cheaper and better.