What GPS systems have the most accurate voice address entry features?

Looking for a GPS system that will help me as a pizza delivery driver. Would prefer one that I can buy used or refurbished in order to save money.|||What you need is a GPS with Text to Speech and multi-point routing. The Garmins that have multi-point will also sort the stops into the most efficient route. Others have multi-point but do not have the sort feature. If you go to http://the-portable-gps.com and click on Garmin GPS also check out the Discontinued Garmins as they also offer this feature. When you click on the Garmin GPS or Discontinued Garmin you will get a comparison chart that will show the models that have multi-point routing. Click on a model that is of interest and you will get a detail sheet explaining all the features of that units. Good luck and where's my pizza?|||Address accuracy is only as good as the data it has, so I'd start finding out what mapping service is most accurate for where you will be going, and get a GPS that uses data from that company.