Na, I'm happy with 32-bit but I will be getting a new laptop once 7 is released with 64-bit home premium. My school had both 7 Ultimate 32 & 64 but since I had pre-installed Vista 32-bit I decided to go with the 7 32-bit. I did try the RC on 64-bit and it ran it fine. I would just rather have 4gb of ram to have a 64 bit os though.
I got such a steal Windows 7 Ultimate for only $20 I LOVE BEING IN COLLEGE!