So i'm currently going Mac (With MS remote desktop) to a Windows computer I don't mind automatically logging out from, and running TightVNC viewer from there, to a windows computer running TightVNC server. Like with the windows remote desktop client, the windows server you connect to will log out(which I don't like, it's a bit invasive).

i'm connecting fine Mac to a Windows 7 machine with that. I haven't used it much but as far as I can tell you get proper clipboard sharing with that. So that can let you connect Mac to Windows. There is an app developed by Microsoft for MAC, which is a remote desktop client for Mac. And I tried TightVNC(windows to MAC - mac's native remote desktop server allows tightvnc client/viewer to connect to it) and found clipboard sharing not happening in the sense of working both ways. I tried chicken of the VNC,(mac to windows) and found the clipboard sharing to be poor e.g. I don't know what client you used on MAC to connect to Windows TightVNC server. The VNC solutions connecting between mac and windows don't seem to be much good when it comes to the clipboard.

Download tightvnc mac