And... and... I think I'm a believer.
For what I've done so far, the extra information KDE provides is very well thought-out, just what I need to know when I need to know it. For instance...
- When I want to remove a USB drive or somesuch, but something is still using it, Ubuntu (like Windows, including Vista) only tells me that something is using it. Kubuntu tells me what is using it.
- Alt-Tabbing through my open windows gives more information than just the icon of each running program - enough so that I can distinguish between my eight different command prompt windows.
- Hovering over an icon pops up the file properties. Nice! I mean, why else would I be hovering over an icon, except that I was fumbling for the right-mouse button so I could find out more?
- Clicking my networking icon provides all the information I need to choose at a single glance, and then one more click connects me. Also, Kubuntu seems to jump to conclusions and do the right thing for networking - when there's only one wireless network around, Kubuntu just connects me without waiting to be asked.
- I really liked Ctrl-+ to increase the font size of GNOME windows. That's important when trying to read laptop screens in adverse environments (like outside). I haven't found a KDE equivalent.
- The built-in text editor, Kate, bungles the spaces/tabs in Python files. That's one good reason to install Komodo (free editor or the real thing) immediately.