Already being an owner of an aging ibook, I was thinking of buying a new powerbook (either 17 or 15). I'd describe myself as a power(ish) user I suppose, in that I do a reasonable amount of movie and programming work, so I want a powerful machine. However I don't require the fastest machine on the planet, and I like the convenience of having a portable if only to able able to use it anywhere in the house. However, I am really annoyed by the decision to put only 4200 rpm HD's in even the 17" powerbook. I don't know whether the decision was made due to power consumption or heat generation (or a bit of both), but to put such a slow HD in a top of the line power laptop seems silly to me. If the reason was entirely down to power comsumption, Apple should at least offer a faster alternative (say 5400) stating that it will lower the battery lifetime, so the buyer could decide which they'd prefer. This wouldn't worry me, since mine would never be far from a power point anyway... Anyone else have any opinions? I'd contact Apple but I'm sure I wouldn't get a response. The speed of the HD is critical in my eyes, and it seems to have be glossed over, with people concentrating on the speed of the CPU or graphics systems.