If you are a Call of Duty fan and a Playstation Plus member, March is your lucky month. Unless you own all the COD franchise titles, you’d be interested in comparing prices on the PSN store with retail prices. To make the maths for you, the PS+ offer saves you 5 to 10$ per game.
I played most of these games, despite my FPS-related motion sickness, just because they are really good, the old and the new ones. But it’s not a collection I would want to own. And even if I did, I wouldn’t want it to be virtual: Some games are made to be shown off on the top of your shelf 
Another game coming to the PS+ this month: Rayman 3 HD. I didn’t play it but I know it’s not by far as good as the beautiful Rayman Origins, which is a must have on your PS3.
Games I downloaded this month: Infamous Festival of Blood and Journey. Finished the first, still playing the latter. Reviews coming soon.
