Too early to be running 64bit, IMO. It’s not even 2010 yet.
Wish I had choice since Best Buy pushing 64 bit on Dells.
I am running 64 bit versions on My Linus browsing machines and my shiny new laptop....I think even Flash now has a 64 bit version out for Linux....so I am ready...(Not sure for what,,,but Bigger is always better )