The speed cameras are numerous but easy to see , big yellow gantries , most of them look at the front of the vehicle but there are 2 or so which look at the rear so be careful to look when you pass them , the a9 is not as boring as the m6 , I would use the a68 through jedburgh to Edinburgh then the a939 from near Perth passed my house to grantown on spey it's much more interesting, the main thing is the lack of traffic, we moved from Yorkshire to Scotland and the population is about the same and the insurance is about half , have a good time