Hi Since the new Macbook Pros have an SD card slot, I was wondering if using a large capacity SD card as a primary drive is feasible or not. I did read an article on Macworld that this is indeed possible. But I want to know its practicality. Lets assume I wont be needing the SD card for anything else. Will the SD card really be faster, stabler, more reliable than a hard drive? Secondly how useful would a high performance card like the Sandisk Extreme III be over an average performance card? Will the difference be noticeable? Are there any problems with such a setup (assuming 16/32 GB is enough for me)?