Partitioning/slicing USB HD

[Chris Brennan]

So I've hot a 60GB 2.5" IDE Hard Drive in a USB Enclosure. Thing works like
a champ, even in FreeBSD. I'm curious the best (or most efficient?) way to
cut the drive up. My Goal is to have a bootable slice (5ish GB for the
latest stable DVD), some free space if I need to write to a location
reliably from the Fixit prompt and then have several slices for various
branches, checked out at my leisure that I can mount to /usr/src on what
ever machine I happen to be on or traveling to. Should I suffice to use
bsdlabel or should I think about gpt?

I've read a bit on both and am not sure which is really the best choice for
this application.

c-