Since XP is being canned in June I decided to make the switch.
Um... Just to clarify this: XP won't be canned until 2014, when the secondary support phase ends. Until 2014, MS will continue to release critical updates, and suffice it to say that it won't be going away any time soon. They will stop adding new features to XP, but other than that it will continue to be available and supported.
They gave a (tentative) ultimatum to OEM's to stop pre-installing XP in June (with the exception of sub-notebook systems like the ASUS EEE-pc) -- but even that isn't happening.
Dell already released a press-release stating that starting in June, they'll have a 'vista BONUS package' option for the OS, which contains both a vista *and* XP recovery CD. And for convenience sake, they'll even pre-install the XP version for you. (Essentially giving MS the finger, and continueing out-of-the-box XP installs, just under a different name)