I’ve been speedtesting a few VPN networks, and the biggest surprise has been how fast Mullvad + Wireguard are. I need to try NordLynx (NordVPN’s flavor of Wireguard) for more of an apples-to-apples comparison, but at least on the speed metric, it looks like Mozilla chose a good partner.

Making deeper data exploration possible is a work in progress, but you can see what I have so far here: https://vpnwire.co