Might keep an eye on BBC Electronics board. Have seen both items for sale recently. If its an LMS 520C, it will take the new Hotmaps Premium or Hotspots Pro. I have the new Premium in my 520. $124.00I get my mapping chips from Hodges Marine. Last edited by RazorCat on December 6th, 2013, 12:32 pm, edited 1 time in total.