Hey, if anyone can help me with this question, I'd much appreciate it. I know it's a bit idiosyncratic, but I'm a first time Mac buyer and I'd like to get it right, especially when dropping 2,000 bones. I'm about ready to buy a Macbook Pro 15" 2.4 GHZ, but deciding between the 07 model and the newly released update, since it appears that the benchmark scores were better for the older 2.4 GHZ model Amazon has the older 07 models discounted at the moment with a $150 rebate. I can also get a student discount at the Apple Store, but would have to pay tax on a $2000+ machine. In the end, the Amazon price is about $150 lower still. My questions are: The new model has the option of a 7200 rpm hard drive. How much of a speed boost would this give over the 5400 hard drive? How much of a difference does the lower cache on the new chips make, with the same speed rating? These two combined, what would be faster, the new 2.4 ghz model with a 7200 hard drive, or the older model with a 5400 harddrive. Don't really care about the HD size, I won't fill it up anyway. Thanks guys, I'd appreciate any advice or related info!