I'd go with the J&J personally. It's priced right, reliable and accurate, and you might find you never want to change to another. But if you do, you don't have a bunch of money invested in it. I don't have one, but it was my second choice after my SpecOps Blackcell C carbon fiber barrel.

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Armorer Info: SpecOps A5A2, E-Grip, EndGame 10" Barrel, 12" Blackcell C Barrel, JCS Red Hot Powertube, 68/4500 Pure Energy HPA, PSI SS Braided and 32 Deg Coiled Remote Lines.