I have deployed a few Ubuntu 10.04 LTS systems for small business users. It uses Gnome 2 DE and users are happy with it. With upcoming new LTS release I have a problem - default DE Unity is not suitable for small business environment. Most work is done with LibreOffice programs, internet browser, email client and file manager. Current options are either Kubuntu or Xubuntu. Each option has its own drawbacks - KDE might be too complicated and have some desktop compositing problems on low end systems, while Xubuntu lacks some features as it is preconfigured with alternative, lighter, software.
Are there any other options of stable and supported desktop environments?