lettmon: I started with MGS3 (PS2) a few years ago, I tried it a few times and could not get into it at all although it is claimed as one of the best in series if not the best. I have also tried MGS2 (PS3) and Peace Walker (PSP). I could put up with the awkward controls if the games were enjoyable but they aren't. The extremely slow interface alone drives me mad. Voice acting of Snake sounds retarded, I was rolling eyes when I first heard. I cannot say one good thing about MGS games, they are entirely and completely broken to me. I love other universally loved stealth games like Thief (1998) and Splinter Cell (2002-2006). If MGS are games of their time and need to be played on day one, they age terribly, while I still to this day play Thief fan missions and they are as good as in 1998. Now MGS5 comes out and seems like everyone is hyped out of their mind like gaming has been saved, it makes me dislike this series even more because I admit I don't get it.
MGS 3 is so far the steathiest the series can ever be.
(The stealth mechanics of MGS 1 and 2 were rather simplistic)
And canon wise its technically the "First" game in the storyline.
I understand why the controls may seem dated. You can't croutch walk, you can't move, aim, and shoot. None of the modern control schemes we are used to, MGS 4 is the first game that introduces all that modern controls. (Heck the 3DS version of MGS 3 has the better controls you want)