In addition to TomToms own Camera database you can easily add the PocketGPS database - £20 per year - which includes mobile, average speed and fixed and is kept up to date buy both their users and their own team so is generally considered to be one of the most up to date and accurate databases - updates released weekly.
The C50 I also use is a standalone - non SatNav - unit which also has a verified database, running both is a belt and braces approach but suits me. This unit could also be used with NavPro loaded with the PocketGPS database, the NavPro would show the location and the C50 would give the audio alerts.
Another alternative is to use the PocketGPS database on a GPS SmartPhone in conjunction with loading it onto the NavPro - the licence allows installation on 3 devices. On a Smartphone without maps PGPS will give audio warnings and the NapPro should show the locations.
I am sure there are other combinations possible but if you have a NAvPro and PGPS on a SmartPhone or by using a C50 you get the best of both worlds.
If you have standard Nav, then a C50 will give audio warnings and if you have no Nav then a TomTom running PGS database is the probably the best option - which can also be run alongside the standard Nav unit, a duplicate I know but gives you both Audio and visual warnings.
When I added standard Nav to my GTi order I nievely assumed you would be able to load a fully working Camera Database with Audio warnings - If I was ordering now I would save the cash and just buy a large TomTom that can take the PGPS database - care must be taken as some of the latest versions of TomTom do not allow third party databases to be loaded, but plenty still do.
Here endeth the lesson ........
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