Ihad been using MST 2011 but decided to update to 2013. Thank goodness that I purchased the CD instead of downloading. Their code is screwed up, at least part of it. I was planning a trip to Tennessee and we wanted to stay at parks in Granite City, IL and Frankfort, KY that we had stayed in before. In both cases, 2013 MST had the RV park in the wrong place and you couldn't work around it. I also had problems when I tried to over ride the MST selected route because I wanted to take a specific road. I never could get that to work. Finally, I said enough and went back to the 2011 version. So beware.