I have the Elite 5 DSI, but mine is DSI only and doesn’t accept map cards. I believe there is a combo that does, and that’s the one you’re asking about? You might ask Ben at http://www.jollyannsales.com/FishFindersGPS.htm as I’m sure he’d know.
I have the elite 5 with gps + sonar…I had problems with the 2013 lake insight pro with it not showing the numbers on the contours. Took it back to cabelas and got the 2012 Lake insight chip and problem went away. Very happy with it now.