Hello, I am buying a MBP15 this week. I am very tempted by the 256GB SSD. Ignoring the huge price compared to buying it separately, does anybody know which brand it is and if it is a good performance 256GB SSD? That is compared to the other mean-nasty-fast SSD's out there. I am in a situation where I will fork the 750$ but I would not do it if it is for a drive in the low end of the spectrum. Thanks for any tip?