Do the Hoppers and Joeys come with learning remotes like the 21.1 learning remotes I use with my current 722/612 receivers. If so, are they the same 21.1 remotes or something new and improved? I also was wondering if they take the remotes when you return your old receivers as part of an upgrade? And, if so, should return the remotes 21.1 remotes I am currently using or some old 6.0 remotes I have laying around.