What game should I buy?

[jckerr4]

My PC blew up about a year ago and I gave up on Windows and started using my MAC. You can't play Tiller/HPS on MAC unless you run virtual Windows and I never got around to setting it up. Now we broke down and bought another Winblows PC and I am getting back into playing. I only found 1 disk - Kursk 43. What game should I buy next? I am looking to find whichs games are good to play and popular as I only like to play humans. I don't want to pick a game that nobody is playing
Thanks
Joe