I don't use VPNs in general, but I did give Mullvad a try for a month because my friend had been talking about it. It's simple to use and offers pretty much everything you might want from a VPN. They also take privacy VERY seriously. You can literally pay them in cash, if you want literally no digital footprint from your Mullvad purchase. It's pretty neat.

I'll have to mention though, I'm not a big VPN expert, but my experience was positive. I'm sure you'll get more technical answers from other people.