Does size really matter? Seriously, looking for info/advice. I see all of the major players, Miculek, Taran Butler, etc shooting 20 inch barrels. I've heard Bruce Piatt say he likes it for the sight raduis but is that the only reason? Because, most guys shoot optics. Is it some sort of power factor thing? Is more weight out front more conducive to quicker follow-up shots? I use an M-4 setup because it's handier in the tight spaces but am I missing something? Thanks.