Agreed, GPS is the way forward now. When M'sia's GPS mapping gains a stronger foothold, that'll be the only useable anti-camera solution - only a matter of time so save up and don't do radar/laser.
Best part is that the database can be updated regularly. I've got ~12,000 camera locations set on my GPS satnav - Gatso, Specs avg speed, trafficlightcam, mobile guns etc. So far so good *fingers crossed*.