I've been using Mullvad for the past few months. Have not had many issues with it aside from the 5 device limit and the removal of port forwarding. I'm currently looking at Private Internet Access as a potential replacement. It looks like it offers 10 device limit and port forwarding included with the price.
Anyone using PIA? How's the experience?
Edit: Probably should have mentioned, feel free to offer any other recommendations, I'm not attached to, or against any specific recommendations. I would like it to have a GUI available on Linux though if possible.
I've used PIA for probably close to 10 years now. They removed the 10-device limit recently and just give you unlimited devices now. I've found the connection to be very stable. If there's ever a problem, it's usually due to a specific server getting overloaded, so I switch to a different one. Lots of countries and port forwarding options to choose from. The promotion they have going right now is the best I've seen ($79 for 39 months).