K'42, K'43 or F'40?

[Green]

Easy choice for me. Kharkov '42 is a good game but Kharkov '43 is vastly superior, in my opinion. Apart from anything else, the scenarios are far more balanced for PBEM. It tends to be slower moving than Kharkov '42 due to the weather conditions but otherwise, it at least as good if not better in every other way. A really high quality product and one of my personal top three PzC games.

They are both popular, as far as I know, so opponent availability should not be issue.