This SatNav I have found to be an excellent aid as it has so many features

though you do have to be careful when considering which unit is best for you as there are two units one being called the 595LM and the other is the 595LM Travel Edition.  The one with more functions and features is the 595LM, so look at the comparison chart before choosing which version is best for you.

Comparison 595LM v’s 595LM Travel Edition