I loved GTA4. The aiming system added a whole new layer to the game, I liked the extra effort put into the storyline, the sidequests with girls and hanging out with your cousin and stuff were awesome IMO...it was a complete package for me. I didn't think VC could compare.
I...honestly haven't played enough of SA to rank. I've played it but I don't know how to put it relative to other games. It's great but I'm not sure where to slot it yet, it's the only modern main GTA game I haven't beat.
It's been awhile but I remember thinking the food system in MGS3 was an annoyance, as was the heal from injury system, so I ultimately think slightly less of it than other MGS games. Oh yeah and I remember being annoyed that the bosses were over the top and acted like pokemon (THE FEAAARRRRRRR wait why do you keep saying your codename stop it).
Disgaea would literally be #1 on my list if it wasn't for minor nostalgia points lifting some games over it. If I could separate my heart from my brain completely and rank games based only on a right-now type of scale, Disgaea would be #1 and it wouldn't be remotely close.
I've logged over a thousand Minecraft hours, SP AND MP. It's got problems but it's a HELL of a timesink.
ACB = AC2 gameplay improved + quality additions to the AC2 storyline. Loved it. I think Cesare is my favorite villain in the series.