streets&trips-Mexico

S&T's supposedly uses the same mapping source as Garmin. My experience in Mexico is never rely on one map. I use ST&T, the garmin and Guia Roji. S&T or Garmin will not always send you over th shortest or most logical route and they sometimes ignore things like one way streets. In many cases using the GPS has led to real trouble. They will often take you on a route that is distinctively not RV friendly. I actually find them more useful for estimating arrival times than actually providing guidance. I rely more on the latest version of Guia Roji. If I am not sure of soemthing I will attempt to view it on Google Earth & street view before attempting it. I did this last year with hwy 80 from Barra to Guadalajara, before deciding to try it (northbound) in my RV.