I have two Garmins, a 182 for down and a 182C for the flybridge because
it's easier to see in the daylight. I don't have them interfaced with
radar, because I'm a bit paranoid about having one of them take out the
whole thing, so I leave them separate.

Garmin has the best charts with their BlueCharts, which of course are no
good in any other unit. They also have the best customer service on the
planet, IMHO.

Capt. jeff