You're clearly biased towards sandforce with your Raid0 setup. If this compression method of accessing NAND is so great, why didn't Intel or Marvell or Samsung implement it? Were they all too stupid to consider it even though they literally have over a billion dollars of R&D resources?

Obviously you're not an SSD engineer so there are other cons about using onboard compression that you don't know about or haven't been made public. The only reason sandforce went this route is because it lowers production costs by cutting out the external cache chip. This is the only way sandforce chips could be price competitive since they're such a small startup company with no fab of their own.