Max Leibman has moved!I have now moved on to Splashtop's Wired XDisplay. It does not do wireless and is slightly more fiddly to set up, but it also does not require an account or sign-in of any kind and is a ONE-TIME purchase on the Play Store, and only $6.99 (there is also a free version but it can be used only ten minutes at a time).
I am normally a proponent of subscription pricing in software, but I'll take the better deal when I can.