I want to set my Tor browser to use specific Tor exit nodes. I think we are currently only able to choose by country rather than city? So which countries nodes are the best option and why? I will mainly be accessing websites based in the US, so im thinking exit nodes somewhere outside the US would be best option for extra protection..? Also how can I set Tor browser to stop changing nodes/IP address while im using it. At the moment it changes IP address like every 10 mins! This is causing me problems. I want it to just connect then stay with that IP until I finish what im doing and close the Tor browser. Can this be done?