I would like to purchase a new SSD. I was thinking of getting the Crucial C300 128GB(Model number: CTFDDAC128MAG-1G1). How is it like compared to OCZ Vertex 2 120GB and G.Skill's Phoenix Pro 120GB quality and speed wise? Also, does it have TRIM support? I was told there are 2 versions of the SSD, is mine the fast or slow one? Thanks.