Christmas present to myself, maybe

[daisy]

Although Christmas is past I am also thinking of buying a SB title.

The Spanish Civil War/Korea/Dien Bien Phu/Pacific looks to be the most interesting - but are there still people playing these or should I rather consider Red Victory as it seems to be the most popular?

I am running Windows 7, any issues with running SB under it?

Is the AI any good, in other words will I get a lot of single player games out of whichever game I buy?