If so, what's it like? I used to have a 2.33 GHz C2D 15.4 with the 160 GB 5400 RPM HDD (wow look at all of those acronyms!). I since have upgraded to the 2.4 GHz with the 200 GB 7200 RPM HDD. I'm still waiting for it to arrive in the mail but I'm wondering how much of a difference in every day use I'll actually see with the faster HDD. Any experiences?