Upgrade internal disk

I am thinking about upgrading my G4 powerbook internal hard disk drive. I currently have a 20GB disk with 3 partitions. I want some with 60 GB or better. What kind of drive would I get and where?

The 5400 IBM Travelstars are very nice (albeit a bit noisy) -- a definite step up from the default 4200RPM drives.
Check online store ratings and save money with deals at PriceGrabber.com
60GB--$329

I've heard good things about the Toshiba 5400RPM drives as well (but no personal experience with them).
Check online store ratings and save money with deals at PriceGrabber.com
60GB--$238.95

Thanx gatorparrots, for the help.