You've got a motherboard that is SATA 3.0 6Gb/s capable. It has two ssd controllers. One is integrated into the Intel Z68 chipset. The second one is a Marvell Controller. You'll want to connect your ssd to the Intel SATA 3.0 6Gb/s ports on your motherboard.
For speed you probably ought to choose an ssd with a SandForce 2281 Controller. Here are your choices in no particular order:
Corsair Force 3
OCZ Vertex 3
OCZ Vertex 3 Max IOPS
OWC Mercury Extreme Pro 6G
Get the ssd with the best price. For gaming there won't be any difference between the ssd's. The ssd's will not improve FPS or the actual game play. About the only thing an ssd will do is load the game quicker and load levels, charts, and maps quicker.
Here is a link to the ssd database:http://www.johnnylucky.org/data-storage/ssd-database.html
You can scroll to the different brands and models and then click on the links to the technical reviews.