Have you ever tried comparing the speed of a built-in
floppy on a 68k Mac,
 to a built in floppy on a PPC Mac?  Like I said above, the speed difference
 was extreme!  Neither the PowerBook 540c (68040) or the PowerMac 8500/180
 (PPC 604e) were using a USB floppy drive, they were using the built-in
 drives that Apple sold them with.  I've never really compared the speed of
 the USB drive connected to the G4/450 AGP to the 8500/180, but as I recall
 they felt about the same. 
My 7300's floppy actually was quite a bit faster than my dual G4's USB
floppy (oh MAN is it slow), but both are definitely dwarfed by the
SuperDrive in my workstation IIci, which is so fast that I use it now
routinely as a disk imaging station (DiskCopy and a nice big hard disk :).
--
---------------------------------- personal: 
http://www.armory.com/~spectre/ --
 Cameron Kaiser, Floodgap Systems Ltd * So. Calif., USA * ckaiser(a)floodgap.com
-- A different taste in jokes is a great strain on the affections. -- G. Eliot