I am looking at buying new cards for my Helix 10 DI units, I was wondering who have used them and what they see as the differance.
I currently have older Premium cards and was considering the new Navionics +, Platinum + or Hotmaps Platinum in looking at the website I am not sure what is the big differance any more between the three. If you have used any of these I would like to hear what you think?