I have sold a lot of the NFA lowers, never had a single complaint. One of the reasons for that, though, is that I try and give my customers the real pros and cons of both types. As was already mentioned, if someone is going to do competition or just shoot alot, I usually recommend an aluminum. If it is completely about how much can I build an AR for then I suggest the NFA. They are by far the best poly on the market as far as I am concerned. Forged aluminums are co,img down in price evey day now. Heck New Frontier has started making them as well. They also started making their own billets. I got 5 of the initial run of them and they were as good as any of the billets out there, just cheaper.