– Screen is larger.
– Unit boots up faster and connects with the satellites faster.
– Maps scroll and update much faster. This is quite noticeable.
– Volume range is better. It can be set loud enough to hear over the radio with windows down now.
– 12V Power cord plugs directly into unit so you don’t have to fit it into a multi-pin housing first.
– You now can select a variety of outputs on the main screen: ETA, Miles to Go, Travel Time etc.
– “Speedometer” screen is easier to read yet offers more info.
– IMPORTANT: Nuvi 50LM has a true “Off” switch. With my old unit I had to remove battery or it would drain.
– Cost was only $50.00 more than a map update for my old unit!
– I was easily able to add the latest maps (for free) by logging on to Garmin.com and running the update program.
– When I ran the updater, I was also able to add new voice choices (including Brit and Australian voices) and custom icons for free.