I've tried multiple and now stick with KDE for two reasons: 1. it gets out of the way when needing to do something (a lot better than some of the alternatives) - for instance games, 3D tools or the like. 2. It recovers from a restart, often back to normal use. It's nowhere near as consistent as the gold standard (MacOSX) - but it works. Gnome 2 worked - more or less - although the terminal restore was kludgy it still worked. Nothing else since has.

Given I need to restart from time to time and restoring my desktop can be somewhere between minutes (if I knew where everything was) and hours (if I have to go through a bunch of files to figure out what all was running)... so yeah. KDE for the win. (among other reasons the intel AX210+ wireless chips are still rather dodgy with suspend/resume on a laptop, so tend to crash hard within an hour of a suspend).