That's actually interesting. My yearly Proton subscription ended several months ago and I tried both NordVPN and ExpressVPN before switching back to Proton. The other two options had limited server locations and I wasn't a fan of the software/setup. There's also a weird shady vibe with how they do their advertising compared to Proton, can't quite put my finger on it though. Proton's software also seems to be more intuitive (although a bit clunky).