I have 3 brands of garands, SA (pre war, ww2, and post war), Win, and HRA's. (No IHC unfortunately).
The winchesters have the ugliest machining of the bunch. Now I won't fairly try to compare the post wars with prewar or war production but the WW2 SA is still much better crafted than the winchester. Winchester just pumped them out the door; build it, fire it, stamp it and box it.
One of my winchesters is missing a couple lightening cuts behind the op rod track. Took me awhile to figure out why it looked different. Winchester is also the most likely to have barrel draw issues due to short receiver faces. Had one of those too that the greeks tried to rebarrel and they filled the gap with high temp solder. Shot like shit and I had to back track what was wrong with the gun. Apparently winchester just cut barrel shanks to fit those off receivers and shipped them out the door too. The next rebarrel was a bitch!
IHC got the most flak on thier guns and it was mostly due to SA giving them bad set up gages or measurement fixtures.
I looked at a Eddystone this fall and almost got it but kind of backed out when I saw the Johnson barrel. It was in a white painted Windester stock though. I had planned to strip the gal down and clean her up. I bet that enamel paint protected that winchester stock pretty good.