Use to have this view,now conceded that a vpn provider with good reputation and accountability is best. Your local ISP sell whatever data or inject whatever content thet desire,and your rights mean little if your contract stipulates they can sell this access to a 3rd party and this 3rd party can then resell analyzed or raw data to anyone including your own government. If you perform methodical risk analysis,you will find having the ability to damage reputation of your first-hop provider is an ideal leverage. Never negotiate from a position of weakness (e.g.: ISP or Tor exit nodes)