Sorry can't help with your particular enquiry, but will be intereested to know how you get on with the Snooper.
I'm not too happy with mine; the original unit had to be replaced as completely locked up, and the reeplacement still far from easy to use, dropping out fairly oftern while in use, difficult to use for a route where you need to 'force' it to follow your preferred route, and the instruction manual (which supposedly covers all versions) not at all user friendly. The mapping - although regularly updated - is still way out of date with reality, particularlry on some main roads in Spain.
Hope you have better fortune.