Just to clear things up; as far as I know nobody compares the QuickFire Pro to Filco, it's the QuickFire Rapid that's nearly identical.
I don't know if they are exactly the same, I've heard that the quality of the Filco PCB is ever so slightly better than the QFR, but I own both a Filco and a QFR, there's virtually no difference other than the visuals for me. They both feel equally well made, although I liked the stock QFR caps better than the stock Filco caps, despite the ugly font. Might just be me, though, there should be very little difference.