fast(est) XML editor [closed]

Question

Working with multiple XML documents is incredibly slow with Altova XMLspy and Liquid XML Studio. When i am working with 3 Documents (100KB - 2MB) even switching between them takes over a second (its not a hardware issue, really) which is really frustrating.

There are so many XML editors out there that it would take a lifetime to try them all.

Features i need are formatting (pretty-printing), validating and similar simple stuff.

It has to "understand" Schema

The editor should have a GUI, but it doesn't have to be fancy.

Free or Open Source would be nice but not a must.

Cross-platform would be great, Windows is a must.

Speed is essential, magic features are secondary.

So, what would you recommend?

Answer 1

http://www.firstobject.com/dn_editor.htm

Is the best free XML editor i have ever used. It will open 100 MB documents in seconds.