Which PzC game to get?

[Chipmunk]

I don't yet own any Panzer Campaigns series games but I'd like to start. There seems to be a lot to choose from so I was hoping maybe someone could recommend a good one to get into the series with? Also, I'm quite interested in the North African campaign so I was wondering which of the two games set in that theatre would be better to start with?

Thanks in advance.