I own all the DCS products (the Ka-50 Black Shark and the A-10C Warthog), very step curve.
Don't fly them because I don't have the time to learn all the systems and avionics, they are big time consumers, at least to my level of knowledge.
The manuals, information and help of the community are very good. And the products themselves are state of the art simulators.
Cheers.