Nord VPN works well, very simple to use.

it's just works

The best VPN around. Fast, simple to set-up and cheap. I use it on a regular basis on both Firefox and desktop (Windows, Linux).
Highly reccomended

been using NORD VPN for 3 years and no issues, now that ISP's are being requested to block VPN's we will have to get more creative. So far so good

Nordvpn is the best vpn proxy extension ever. I like it.

no issues

Only been using it for a week now but, so far, it has been flawless. I'm used to having to manually connect to VPNs but having this extension do it automatically means I don't have to think about it. I'm also really impressed with speed. I'm not noticing any slowdown or lag with any of my traffic.....really liking it so far.