Oh, that Toshiba drive wouldn't work for me, anyway. I need a SATA drive.
I think I'll just wait it out for awhile and see what hard drive technology does for the next couple of years. If 16MB buffers are the new trend, surely someone else will come out with a 7,200RPM drive with a 16MB buffer.
Besides, I just dropped over a thousand dollars on this P105, and I'm a college student! I need to let my checking account recuperate for awhile, anyway...