Msd 6a or orange box

Who has made the switch or tested both msd 6a ignition box or Mopar orange box? Is msd worth it? Any noticeable difference?
What's your combination ? Year car ,engine size ,compression, camshaft size ,gears and intended usage? ) A stock Orange box does good ,in near stock applications.
MSD, or a plug and play is nice.. Contact Trailbeast here.. I actually drove his car ,and the ignition conversion is quite clean ( and affordable)... P.M. him ,he's got game.