I own all the Eugen Systems stuff, from Wargames: European Escalation to WARNO and everything in between. I love the series and have played it a lot. I still play all of them.
I recently picked up Regiments, and so far I like it very well. In some respects, I even like it better, in that the gameplay mechanics for controlling units and the camera are quite nice. Things seem a bit more streamlined for the player.
I think it's worth a try, for those who like this sort of thing. If you like the Wargames/WARNO series, you'll very likely enjoy Regiments.