xml-dev - DTD or XML Schema editor recommendations (Win32)

[MarkH@i2.co.uk]

My ideal
- text based (ie typed input)
- syntax checking as you type
- syntax coloring of content, highlighting errors as you go
- autocompletion menus (eg where #REQUIRED | #IMPLIED | #FIXED would go I
get a pop up menu as I type containing these items)

Is there anything out there with these features for Windows NT?

I've looked at 
  Athens - features above present, but too unstable
  XML SPy 3.5 beta 1 - feature packed but not the above, making input
painfully slow (particularly for DTDs)
  ezDTD - good, but again not very slick for input for the same reason

Any recommendations welcome, but particularly with the features I'm looking
for.

Thanks

Mark
--
Agile HTML Editor
  Agilic Corporation
    http://www.agilic.com