Quote - Also, I am asking in several places:

For Vista-64 bit.....

What are the various flavors and feature differences. I can't seem to find a page that shows a comparison chart or anything.

::::: Opera :::::

AFAIK,  the different Vista packages come in both 32-bit and 64-bit versions. You can just compare the packages:
http://www.microsoft.com/windows/products/windowsvista/editions/default.mspx

One thing that is not listed there is max. RAM:
Home Basic - 8GB
Home Premium - 16GB
The others - 128GB

Friends don't let friends use booleans.