Hello!
I think I already recommended MGSV to Logan but I'll try it again. I love the series, but initially I am recommending because, in my machine, the FOX Engine, in which it runs, is extremely stable. No other game looks so beautiful and can run at 60FPS in my machine: A10 7850K, 8GB with a Radeon R7 260X 2GB. No overclock. I wish I could see you guys testing it with the hardware you have.
Metal Gear Solid was the best experience I had long ago when I used to own a PlayStation (PS). The sequences I didn't play, just experiment in some friend's house because the consoles like PS2 were expensive here (very), and mainly because had a computer, a very good friend game one and I got addicted to this strange machines and it was enough ( :( ).
Then came PS3 with an incredible hardware at the time, and not surprisingly, an incredible price too (Wow! That price). Years ago another very good friend bought, not for me, a PS3. Some time later I started giving him some games as gift. He lives in another state and I go there to visit him and his wife. They are very good people. I go there frequently and stay there for days. Some time ago I bought MGS4 for him: "Very good experience. Long game. Intense.". Meanwhile I discovered the magical world of Steam. Steam deals are awesome! He played, in the old days, the the first MGS with me. We played for almost 14 hour, if I am not mistaken.
Oops! it is too long and boring.
So I am here to recommend MGSV, both Ground Zeroes (places in 1975) and The Phantom Pain (places in 1984). Bear in mind that this GZ is very short and almost a demo even having the beginning of the Phantom Pain story. It was very pricey on the release $30-$40. Revolting. It has a main mission with the plot and 5 other small missions. All missions are in the same stage.
The Phantom Pain is very big, I can easily say more than 100 hour of game play inside an open world game where you can approach the mission in any way. It has 157 Side Ops (side quests) and, give or take, 50 missions (38 really) the others a repeated missions in harder difficulty.
I have to try to defend the game here because of the conflict between Hideo Kojima, the creator of Metal Gear series (MG and MGS) with Konami. I don't know the story but everyone that played the MGS games figured that the game is incomplete. We know from the series that this game would be much bigger than he is with many more things to do, probably incorporation the different mechanics from the other games in the series.
MGSV is different from the MGS series until 4, they were like animes. Because of the style of the characters, resources, scenery.: it has Mechas, Cyborgs, A.I.s, Superpowers and jokes. :)
MGS series are stealth games in the games there are the TEA and TEO subtitles: Tactical Espionage Action and Tactical Espionage Operation. In better words they games with some action.
Sorry about the bad English and being a MGS fanboy. :D