I am buying a new MacBook Pro, need a 500 GB hard drive, and will be using Aperture and Adobe Creative Suite 5 very frequently. My budget is firmly fixed, however. I can afford EITHER the 2.4 GHz i5 processor with a 500 GB 7200 rpm hard drive OR the 2.54 GHz i5 processor with a 500 GB 5400 rpm hard drive, but not a machine with both the faster processor and the faster drive. Which do you think will give me better performance? Why?