We are currently using eWebEditPro for Rich Text editing.  It has a very handy feature(which we required) that will clean the extra  Word tags pasted into the richtext field.  For example, find something in a Word document that is formatted nicely (bullet points, whatever), copy and paste that into your Rich Text editor.

Switch to HTML view and notice all the extra tags that word has put in.  Is there a way to clean those out?  Will XHTML accomplish this?   eWebEditPro has a separate feature for this (as well as XHTML output) so I am assuming there is something more to it?

Yes, mostly. It will leave the msoNormal style tag but get rid of everything else.

Why not give it a try and see if you like it? I'm sure some of the online demos have that paste from word feature.