Dave Smith Instruments SYNTHESIZERS

Who has experience with the editors currently available for the 
Evolver (SoundDiver, Unisyn or freeware Mac editor)? The reason I ask 
is that I approached a friend who does very nice and reasonably 
priced editors about doing one for the Evolver. He wants to know how 
well the currently available editor options work and how much 
interest there would be for a PC editor before he commits. 

His site is here:
http://soundtower.com/synth/editors.htm

Thanks!

Sayer