I've noticed some differing opinions on the subject of hard drive speed in the Macbook Pro's. I'm going to buy one as soon as the Core 2 Duo's are implemented, which will hopefully be happing in the next few weeks, so I thought I would ask the opinion of as many people as possible. I'm leaning towards the 7200, but not so much that I won't change my mind for good reasoning. Here's what I've heard/read on these forums... The speed difference between the 5400 and the 7200 is negligible and barely noticeable at best. 5400 does move slightly slower thereby saving battery power. Conversely, the 7200 runs faster, getting whatever job it may be doing done faster, thereby saving battery life as well. What is true here? What other factors should I consider before making my choice? Thanks for your help.