Which do you want, a paid service, or a screen/keyboard protocol/program ala VNC?
They're kind of 2 different approaches. If you own and control both endpoints, then VNC or RDP is likely the better way to go. If you're trying to connect to various end-point PCs that move around a lot and don't want to deal with firewall issues, then things like Go To My PC or copilot are going to be better, but the two approaches aren't really competitive, they solve different problems.