Hi, I am planing to buy the MBP 2012 13" and also upgrade the storage to SSD RAID 0. However I have just read from some posts that the optical drive in the machine only support SATA II (3Gb/s), which means that the advantage of the SSD RAID 0 will be gone. Any friends here have setup the optical bay for an SSD? any performance reports? Thanks a lot as I am really confused now. =[