I torrented xplane 11 and after switching from dcs I'd say that dcs had more to offer and had a higher ease of access and learning everything.
X11 is cool but its a bitch to download all the textures (its over 60 gigs), and you have to manually download airports and additional scenery
Good thing I didn't pay for it because I uninstalled it from my pc due to not particularly enjoying it.
I think one minor thing x11 has over fsx is that it simulates airfoils and stuff like that, very minor.
If you already have fsx and are used to it, there is no point of getting x11