Hello all, i am new here. I was looking for advice and come across this forum. I am a tuck driver and need to upgrade my old Pro 5120 truck. I was looking at the Expert but not sure as 7 inch seems very big. There also seems to be a 6 inch. If any of these have a sim is there a a monthly subscription like a phone. Does anyone know if they come with lifetime updates, speed cameras or do you have to for the live after a year. I would prefer for it to just work through my phone but not sure what is the best option. Don't want to keep paying for cameras and updates if I buy it. Any advice appreciated.