After searching for answers on here, I turned to benchmarks(http://www.tomshardware.com/charts/...compare,1110.html?prod=on&prod=on). However, I cannot tell which would be better and whether the speed comparisons would be noticed in real-life situations. Obviously, the Momentus XT will be faster because of its Hybrid structure with the 4gb SSD cache, but how much faster in reality compared to the 1TB drive. I'm coming from the stock 250GB HDD in the 13in MBP (Mid 2009) and am looking to upgrade. Just don't know which to get as I would like speed and more space. Help?