OCZ SATAIII SF22xx SSDs = Plug and PRAY. The pray is due to a "Small Percentage" (OCZs words NOT mine) of Systems that just do NOT work well with the Sandforce 22xx controller. Need to ad to the box "Buyer beware" (if you are in the minority, such as Me), you are stuck untill it is fixed.
Marvel based SATA III SSD are less probmatic (most problems seems to affect Mac users. Not as fast, based on Benchmarks, but not much difference in real life.