"Good unit - 1 serious Flaw - Hidden Volume Controls"3.5 starson by dfriedholm
Pros: Big Bright Screen, easy navigation, quick recalculating, good battery life
Cons: Volume Adj. requires going 2 menus deep. No mute on main screen
Summary: I got a great buy on this unit and I'm basically happy with it. However, taking a phone call or trying to hold a conversation without the text to speech going is a real process. You must touch settings, then touch volume, tap the + or - to raise or lower volume (or touch mute) just to change volume, You can't see the map during this process. Optionally: STOP navigating all together and then resume when you are ready to have the text to speech continue.
A call to Garmin reveals no plans to change the interface, AND if they DO change the interface, there does not seem to be a firmware update process to integrate new features for the 650. What You See is What U Get - INDEFINITELY