My GPS of choice for the last two years has been the Garmin Nuvi 350. It interfaced nicely with the Kenwood TM-D710A using an Argent Data Systems cable. Everything was working great with the Nuvi up until I placed it in our washing machine. You are probably thinking that there is a better way to clean a GPS than to put it in a washing machine and I would absolutely agree with you. I took the Nuvi with me to Dayton and then packed it, safely wrapped in my clothes, for the return trip. Well – you can probably figure out what happen from there. Being newly GPSless, I decided to look into the AvMap G5 (which I had been drooling over for a while). Installation was super easy. The AvMap G5 comes with a hardcore suction mount, which I like much better than the beanbag mount that I had with the Nuvi. There is one connection to power the AvMap G5 via a 12v cigarette lighter and the other for data between the AvMap G5 and the TM-D710A (and all necessary cables are INCLUDED). With one or two settings completed on the AvMap G5, the GPS and TM-D710A were talking together perfectly. W6GPS has a series of YouTube videos touting the AvMap G5 and all it can do. The AvMap G5 is suppose to also work with the TH-D7A – I am interested to try and experiment with that. The benefits I have identified of the AvMap G5 over the Nuvi is (1) its plotting of APRS icons vs just a callsign and (2) the larger screen display. Another plus for the AvMap G5 is an active Yahoo Group. I am going to try to keep this GPS away from the washing machine.