I have a 12" 1.33GHz G4 Powerbook that I'm looking to replace the hard drive...the current one (80 GB, 5400 RPM) has been in there since I bought it about 4 years ago and it's showing its age- random slowdowns and the occasional strange clicking noise. So, I'd like to replace it before it craps out on me completely. Here's where I could use some help. First of all, I don't need all that much storage space- I only use this computer for running Ableton Live and, between the software and samples and loops, I'm only actually using around 25 GB of storage (including the OS). Of course, I'm not opposed to having more storage, but I certainly don't need the "biggest drive" or anything like that- performance is far more important. Also, I used it plugged in about 90% of the time, so any battery life concerns are irrelevant. Naturally, I'd assume that a 7200 RPM drive would be the way to go, except for two things. First of all, it seems like noboy actually makes 7200 RPM PATA drives anymore, so I'd probably have to try to get a new-old-stock one from eBay. Secondly, I was reading some anecdotal evidence that some of the higher capacity 5400 RPM drives are actually faster than the 7200 RPM drives to to greater data density on the platter. Do any of you have any experience with this? And suggestions/recommendations/insults are appreciated!