I guess this is a hard one, if I want a certain weapon I just have to go with that first. But, best all around manufacturer over the years, that seems to be within price range of a greater number of people, has a wide variety of firearms, and build them to be tough and used a lot....
I'd have to say Ruger has impressed me over the years. They also seem to come up with something new each year. I used to complion about not being enough American made side by side shotguns, and sure enough, Ruger come up with one of those too. (double triggers next?)
In my life I have owned their carbines, rifles, lots of single actions, semi auto 22's, ect...and I have probably bought them so much because certain times in my life I didn't have gobs of money, and they were within my reach, and they worked and took a pounding. They came up with coil springs in there revolvers, and there are people sending their Colt and Colt clones to Smiths to get coil springs in, like Ruger does.
So I guess my best all around manufacturer for me is Ruger. Maybe not the gun this week I get out and admire and gawk at, but they certainly have been a big part of my lfe over many years.