The One and Only...

[Outlaw Josey Wales]

The reason PzC and MC campaign are so popular is that you can play so many different theaters without learning new rules every time, you can jump from the frozen steppes to the hot sand with a few clicks :-)
I really can't decide which is my favorite
If at gun point I must decide to have only one I would say Tobruk '41 for the Italians

Gent: 

While the PzC Series share the same mechanics making it easy to move from different titles without learning new rules, the MC Series are a different "beast." Yes, some of the MC game mechanics are shared with the PzC Series, but the MC Series have many additional rules to reflect modern combat - helos, tactical nukes, chemical ordnance, amphibious units, etc. The MC Series also plays much differently than the PzC Series!

https://www.theblitz.club/message_boards...?tid=70525

Your PzC tactics will fail miserably in the MC battlefields!  

Yes and no.  You can agree before starting to fight a conventional war.  No nukes and chems, but, you will have to get used to helicopters, amphibious units crossing rivers without bridges and a two hex range for most of the more modern tanks.  Artillery can also fire mines into a hex.  Most of the rest is similar to PzCs more or less.  If you have everything possible, you can have a really messed up map if you both use up your nukes and chems.