Just remember that if you pay the extra to breeze through immigration/customs you'll probably still have to wait in the Couples lounge for those couples that are going to your same resort and didn't pay the extra.
But sitting comfortably in the lounge with a Red Strip isn't too hard of a wait.
Couples Negril - September 2011, 2012, 2013 and have just booked 2014
Scuba Club Cozumel - Jan, Apr & Nov 2012 and Jan & Nov 2013
Cobalt Coast, Grand Cayman - May 2013
Retiring & moving to Cozumel, Mexico in early 2014