Does anyone sound deaden their doors when using OEM? My car rattles and couples at certain frequencies and can be irritating in certain tracks.  

people do and it will improve things.
If going all out its quite a job as you need to remove the inner door skin then refit it (using new rivets). I my self have just done the inner skin then covered it with 4mm CCF then deadened the door card too.

Ive also deadened the roof and put underlay up there too to stop the plastic rattling