I can't get a bootable system from either rev 1 or rev 2.
Rev 2 installer seems to give more options, in a somewhat more confusing way. For example, it shows all volumes on my pc as available to install on, not just the one I formatted to hfs+ using disk utility. The business about choosing EFI MBR or GUID is a bit confusing too.
The rev 1 dvd recognized my usb wacom, at least as a pointing device (mouse). rev 2 did not even power it up. (edit

This issue seems to be number of devices on a usb hub... it powered up and recognized the wacom when I unplugged the apple kb (which had another mouse chained to it, for a total of 4 devices into the hub). Actually the tablet-->hub has given me a bit of trouble in xp...
edit: forgot my specs -- K9mm-v mb (via K8M800/VT8237R), 3800+ (single core), 2 x 1G crucial DDR2-800, Radeon 9550 128MB AGP, SBLive PCI, mb lan (Realtek 8201CL), 500G SATA (as ide in bios), 160G IDE slave, 20x LG DVD-RW (ATA master), ps2 kb, mac usb kb, wacom graphire 4, xpsp2 & kubuntu/gutsy on SATA, zeph rev2 /EFI-MBR on IDE (not working).