I'd sell the Martin Logans and buy a pair of Apogees. You can get a pair of used Stages from $750-$1200. The Stages don't have that "make your ears bleed" high end, and IMHO, are a far superior speaker. Check out the website below for other comments, particularly the topic titled "Martin Logan Sequel or Sequel IIs?".
http://audioworld.com/cgibin/sw/forumdisplay.cgi?action=topics&forum=Apogee+Acoustics+Users+Group&number=1
http://audioworld.com/cgibin/sw/forumdisplay.cgi?action=topics&forum=Apogee+Acoustics+Users+Group&number=1