Ask HN: Do you triple-boot?

I just got finished setting up my mid 2011 MB Pro to be triple boot using rEFIt...I now have Ubuntu 12.04 64 and Windows 7 64 in addition to Mac OS X... was curious how many developers do this as well?

Do more people opt to use VM software like VirtualBox over the triple-boot setup?

Which do you like better and why?