If so I have an intereste in this sports game.

But I like to ask what is in you opinion the best year for each game?

MLB 09, 10, 11, or 12 the Show for PS3.

(Yeah yeah I know they are mostly roster updates but still they sometimes they put game changing features)

I've played 09 and 11. Unlike EA Sports games, The Show is actually pretty good at introducing new features each year. I particularly appreciated the introduction of analog stick hitting in 11 (even better, if you don't like the new control methods, they still have the old controls active as a secondary option. Yup, there are actually separate control options for every control section, hitting, pitching, fielding, and baserunning). While I haven't played 12, there were some really nice additional features added last year, specifically improved physics on balls in play and improved roster and trading AI.

I've skipped 12 myself, but I'm planning on getting 13. If I didn't already have 11, I definitely would have gotten 12.