Just my opinion everyone should stay in their comfort zone driving in good clear road conditions on dry roads within 7 mph over. Of course it varies all over everyone is different but I find from interstates and most 2 lane highways the cops let you blow thru traps if you keep it to 7 over. Again drive however you want not my business to tell you what to do just be safe. Just what I do.
That's what I do.
I have driven all over the place. Chicago, L.A., Spain, England and I match the local color. Spain is kind of aggressive. England takes a while because of being on the wrong side of the road. The first time I EVER drove in England I was taking a school bus from one base to another. So I'm the captain of what's like driving a tunnel, steering wheel on the left, driving on the left and when you see traffic coming around a corner at us I freaked out for a while!
You wanna try something crazy, drive in Puerto Rico, it's very strange. When you are at a T in the road you just kinda pull out no matter what the traffic is like. Drivers let you in. Drivers cutting off everyone. At what great about it is no one is honking horns or getting nasty. Then when you land in Chicago and walk outside that's all you can hear are the horns of pissed off drivers.