I know this is going to sound downright blasphemous to some, but I couldn't get into DD (and I haven't tried BD, yet, in the hopes that I'll be able to complete DD first).  I barely even got out of the first town before setting it aside (and I've tried several times with different builds).  D2 was accessible, but I still haven't got very far in it.  On top of that, DC just didn't ring my bells like I thought it would.  Still, having a blast with D:OS.  Strange?  Maybe.  I'm a strange kind of guy.