Any faithful VT100 Emulators?

I've used Putty to connect to a VMS system to run TPU (which I think LSE is a thinly disguised variant of) and I have regularly come across an irritating bug which messes up full screen editing when the on-screen cursor seems to get out of step with the text that is actually getting changed, or something like that anyway. Scrolling down the file and scrolling back up to the point where changes were made reveals that the changes actually made were not what it looked like was changed on the screen. Having said that Putty is way better than any of the Microsoft telnet or Hyperterminal offerings which are completely unusable with TPU or anything else that attempts to make use of a scrolling region (vi maybe? - I don't know). I haven't used MSKermit for donkeys years but as far as I recall, the emulation was very good with the exception of stuff like double height characters and smooth scroll not being implemented which did not affect functionality in the way that the Putty bug does. I haven't used it but I think there were very good reports about the terminal emulation in Kermit 95. I can't recall noticing any problems with the terminal emulation when using whatever telnet client comes with relatively current Apple Mac and Linux systems in whatever terminal environment they provide (xterm maybe?), nor the Multinet telnet client on VMS when running it in a DECterm or a real VT terminal. I also agree with John Wilson's take on VTTEST being well off the mark. Regards, Peter Coghlan.