I have CC2,3, (sold 4) and 5. But I prefer 2 and 3 as these are better games than the later ones.
However are you aware that you can create different secnarios for these. There is a web site where you can down load a version called 1940 and it has British, french and all the rest in it, basically upto Dunkirk and after.

check this link: www.militarygamer.net/CloseCombatRealRed

for more details, a very good site indeed.