Mossberg, Marlin, and Remington here. One of each, and more to come. I'm not interested in one brand, per se, but I tend to stick to one specific product line per brand. For example, for bolt action rifles, it's Remington 700 for me. For .22LR, the Marlin Model 60 fits the bill, and if somethin happens to the one I have now, I'd buy another to replace it. The Mossberg 500 is the only shotgun I've ever held and found comfortable - can't stand the Remington 870 or any Benelli.
Haven't found a pistol manufacturer I want to stick with. I had a Springfield XD and sold it. I wish Glock grips weren't so damn big, I will say that. Likely will try out a 1911 next, I've always loved the look of 'em. IDK which manufacturer though.