Mullvad is great for privacy. But it's blocked by pretty much every VPN block list. NordVPN at the very least bypasses all the ones I regularly encounter.

I do use Mullvad for most web browsing though. But Imgur for example is blocked on it, and it's blocked in the UK, so I need NordVPN if I want to see any images there.

Most people's VPN usage is literally just geolocation restrictions and Nord is really good at that.