I have a plethora of bags and cases. Too many at times.
My precision rifles never leave home except in a hard case. I also have the hard cases for flying:
I have 2 Pelican 1750 cases, and a fitted set of foam for each precision rifle.
I have a Pelican 1700 case with several sets of foam for various ARs.
I have a Pelican 1550 case with several sets of foam for various handguns.
Around town, my tougher bolt guns (700LTR, M40 Clone, Savage Varmint) typically ride in a tri-fold drag bag from Eagle. It folds out into a shooting mat and comes in very handy. It accepts shoulder straps and ALICE gear.
I have an Eagle soft case for ARs that has the 4 mag pockects on the side. Although I don't care for Blackhawk as a company, I have a 3-gun bag that holds 2 long guns, a pistol, and has a pocket for extra gear that I like a lot. I usually carry an AR, shotgun, pistol and mags galore in it, and a small bag for eyes, ears, and ammo.
I have a Bagmaster bag that holds 4 handguns along with MUCH gear, and that transports the pistols back and forth to the range. I have several soft pistol cases that fit in there as well. At one point I had 14 handguns in it, along with eyes and ears. The ammo definately did not fit, though...