Best GPS for cage while I'm working real estate

Trying to make my livelihood full-time in real estate, I'm looking to
upgrade my tomtom1 GPS.  I've been looking at the Garmin 850, which has been
discontinued, and can be had for about $250.  

 

I really need hands free and voice interactive.  In the northern Virginia
area, traffic is a plus, if it is truly timely and accurate, which WTOP
often is not.

 

All opinions appreciated.

 

Thanks!

 

Tom Fitzpatrick

Celtic Racing #806

 

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