PS3 HD Collection versions, if you care. I only recently played them because I didn't care or something when I was 9 years old (for 2 SoL) I guess.
The more complex and larger map design of MGS3 doesn't fit a stealth game well, nor do the extra limitations of footstep noises or needing to hide with camouflage. TS and MGS2 are much faster and easier to manipulate than MGS3.
MGS2 also has the best atmosphere/story/whatever and the simpler industrial graphics have aged far better than MGS3's. It also has the best bosses, easily so in terms of gameplay.
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[NO BARKLEY NO PEACE]
im here to you dark soul with my LIGHT -ertyu