I don't like stealth games. so i know i wont like mgs or splinter cell... Edit: I don't mean dislike as in bashing people that play those games, just that I won't play them.
Same here, generally i dislike the way the mechanics are done for the stealth, for a current example of a stealth mode was farcry 3, you crouched, no crawl option across and open area after throwing a few stones to distract the guards who repeat over and over, who's there, where are you, and then stab them, and one was the old Operation Flashpoint, you crawled through undergrowth in a forest but the enemy were always attracted to you, and one part where you crawled out of the forest halfway to the other forest across in cover a BMP is suddenly alerted to your presence how i dont know and either sits next to you and moves as you do, or runs over you, or shoots you even though theres no possible way it could see you.
In Arma another mission same result the enemy even though your in cover home straight in on you in vehicles, plus the games that leave you with the puzzle over gee how do i get to the upper story window to quietly get into the building, and spend most of the game sneaking about looking for bits to climb boxes to jump onto, so generally i pretty much know how most games run, so its not difficult to make a decision on whether i want to purchase a game.