For $25 you can get the Belkin Multimedia Reader for an express card slot that reads SD, MMC, RSMMC, MMCmobile(w/adapter), MMCplus(w/adapter), MS, MS PRO, and xD(M and H type). I have one and it is blindingly fast. So if you purchase the new 15" MBP, you give up something that may be extremely useful (the express card slot) for something that is not (an SD slot that won't even read memory sticks). I don't think the Belkin reader will boot, but then if you need to boot from something small, you can always put the OS on a jump drive. It seems to me that Apple is saving money by replacing a feature that is extremely versatile (since you can use the express card slot for many things other than SD cards) with one that is not.