Hi, I did a complete rewire and refurb on my console this year, after research between the Axiom and GPSMap went with 2 7” Garmins, had room for a single 9” but twin 7”s gives me more flexibility, often running one as a fish finder and chart on the other, or split screen on one or both for fuel info etc. I’m very impressed with the performance and the charts including the Relief Shading. The NMEA setup was easy too.