Parkerized, stainless is not Mil-spec. It's to be your pistol, get what you like. I have stainless, black/blued and parkerized 1911s, the stainless were my favorites, but my tastes have changed. I'm in the process of getting another 1911 in 9mm for IDPA matches and liked the Dan Wesson Pointman 9, but it only comes in stainless, so I'm getting an STI Trojan. I voted for parkerized, stainless is too gawdy for me nowdays. However if you intend to "customize" your 1911 then the stainless may be a lot easier to match parts.