I would say neither. I'd wait for the brand new OCZ Vector PCIe ssd that will be released this Summer. Sometime near the end of this year we will be seeing the SATA Express standard showing up in motherboards and PCIe based ssd's. It marks the start of the transisition to consumer oriented PCIe ssd's.
If you are going all out and want a really fast system, then you might want to consider setting up a Ramdisk.