I understand where you are coming from but you don't know who pays me for my $dayjob, and if you had a genuine concern about half of the things you say you wish to protect yourself from, subscribing to a public VPN provider is to a certain extent kicking the can down the road - what assurance to you have over the infrastructure they are running, and who might or might not have access to it? What does your contract say and what right do you have to enforce or audit anything in it? Most of the public VPN contracts I have seen so far offer the subscriber little or nothing.

As I have said upthread, if you do want an additional layer of security I would suggest setting up a throwaway Linux box or similar to provide a VPN on demand that is dedicated to you, has no reputation issues, turned on only when you need it, configured as you need it, can listen on bespoke ports or protocols, etc. would probably be a better solution. There are plenty of tutorials out there.