Help me decide my next game.

OK, help me decide my next game. I own a PS4, and the two games I already have are Battlefield 4, and Call Of Duty Ghosts. My choices right now are Metal Gear Solid: Ground Zeroes, Infamous Second Sun, Thief, Killzone Shadow Fall, and Assassins Creed Black Flag. I'm a huge MGS fan, but I'm not sure if the 2 hour story is good enough for the price. Is their that much extra content to make it worth it? I haven't been that big of an Infamous fan, but this one looks different and caught my attention. I've heard good and bad about Thief, but I love a good stealth game. I already know Killzone is more of a graphics eye candy, but that don't bother me, being I played through the Crysis series. As for Assassins Creed, I've heard it MIGHT be coming to PS+ free later this year. So, help me out a little?

IMO you can never go wrong with Assassins Creed.Killzone is a pretty stellar game as well, as for the others, I know nothing about them to say yes or no.

Recommendation in order of highest to lowest:

1. Bioshock Infinite (I added it)
2. Dark Souls II (I added it)
3. Assassin's Creed IV
4. Metal Gear Solid: Ground Zeroes
5. Infamous: Second Son
6. Killzone
7. Thief

And @bfmv2007, it's son not sun. Just saying.

Infamous Second son (got a good review today) or AC Black flag. They will keep you busy the longest.

Go for Assassin's Creed IV, that game is pure joy

Infamous

of that list, I would not buy mgs. the entire game release strategy goes against everything a gamer should stand for.

personally, i'd choose thief, since, you obviously like a good stealth game and I've heard it from enough people that the game gives one the ability to turn off all the handholding and dumbing-down features to create a more "hardcore" game.

Infamous: Second *Son or Assassin's Creed IV: Black Flag.

Get infamous and MGS5 GZ, you won't regret it.