That's the question I have; can you access the remote login screen with realvnc? My understanding was you couldn't do that with vnc on windows, have to use rdp.

No need to pay for RealVNC, when TightVNC is FLOSS. Can confirm the login screen is accesible in global service mode.

If it's still based on VNC, for sure it's much more efficient (and user-friendlier packaged) than any of the open source competition I've experienced over the years. So much that I think that still using the name VNC does them more harm than good.

I think perhaps you're unfamiliar with the open source competition. Most of the open source VNC servers support something like H.264 which while a little dated, is still quite efficient, especially for the low-latency streaming needed for remote desktop applications.

The only novel-looking thing I see on RealVNC's website is adaptive bitrate, which I don't think I've seen in the open source servers.

You know, I might be. In that case, please enlighten me with a counterexample. Anyway, the point isn't to pick on the competition. I'm merely saying that RealVNC is a fine, fairly priced product with a rather bad name. Many people, myself included, have a dismissive initial reaction based on memories of old-fashioned (slow, hard to set up over the internet) VNC. At least with RealVNC, it's nothing like that anymore, whereas with TightVNC for one, it still pretty much is. I use the latter as well, but only for light usage on local networks—acceptable and better than it once used to be, yet a completely different experience.