Or LXDE. But I run Xubuntu personally. Wife's netbook has Lubuntu on it and she's had no problems. Cinnamon's nice, too.

I actually tried the Cinnamon Mint boot CD last night. It seems like a nice mix between the 2. It's not as extreme on the effects as KDE while still having enough to smooth out the experience. I'll quite probably be trying Cinnamon as my primary desktop environment in a few days.

I'm a big fan of KDE, and it's only been getting better lately. I definitely recommend it.

Xfce of course. I personally hate KDE.