Private Internet Access. I’ve been on it for 18 months, and after the first year I jumped on a Stacksocial deal for 3 years for $90. That deal is gone but a similar 2-years-for-$60 offer is ongoing.
I get the occasional hiccup, like a while back not being able to access treelinebackpacker.com from the NYC node because it was temporarily on a blacklist (that got lifted). Speeds seem fine, no problems.
It was one of the finalists for me based on various privacy, stability and speed considerations, reviews, and user reviews on Reddit. (There is also an active user community for PIA on Reddit.)
I can choose between turning on the VPN for my computer as a whole, or just use a Chrome/Safari browser plugin to use while websurfing.
I’m sure there are other good VPNs as well.