I have to disagree here, I actually like some of the tools, specifically SED and WED. WED is a lot like World Craft, which I'm very used to. It has all the functions you need to build great looking levels, even if it doesn't come with a lot of cool extras. Some people may not like the WAD texture system, but I've never really cared about it myself.

I'm not really an artist, but concerning MED I've heard its not as good as Blender, Maya, etc. For one the skinning system is awkward :\ While I can understand a *real* artist not being satisfied with MED, it has fulfilled my needs so far.

SED has been a little buggy for me at times, but I really appreciate the simplicity of it and the mini-documentation bar at the bottom of the interface can be extremely helpful.