That depends. What would you need 2x SSD's for? One will handily beat the VR's in random and possibly sequential read speeds. The only thing that the VR's have in their favor would be faster sequential writes, but, even then, you'll almost never be limited by the sequential write speeds.
What is this system for? Gaming? What's the rest of your hardware?
forgot to add why i may want 2 SSD's, what do you think about having them in RAID 0 aswell?
edit: i may choose vertex instead of intel x25-M, what do you think?