We have to keep in mind that OCZ is new to the video market, and the 8800GTX is the only OCZ branded card. However, they are handpicked cards so overclocking results are more consistent - oh, I get lifetime warranty too but no step-up program like eVGA
I went with OCZ this time only after talking to one of their employees who shared some overclocking results of his 8800GTX - after seeing others with the same card also have similar results, I'm convinced I made the right decision.