Yes i agree. Locally we have blackspots with no cameras yet places with overkill. One village has one at either end with another in middle yet its never been a problem area - I wonder who lives there with clout to get them sited?
I have satnav with camera locations on it but may follow Graham and get the devices he described above.
One question for Graham - are the monthly updates free?
My TomTom needs chargeable updates.