Although I'm not a Mach5 user(yet) I wanted to let Mach5 users know that one of my favorite sound developers Simon Stockhausen aka SampleConstruct and Patchpool is starting to develop libraries for Mach5 & imoho Simon is one of the most brilliant talented developers out there & a really nice guy, so you might want to get in the preorder sale.
Everything I have from him is totally unique and breathtaking,this might make me finally get Mach5!
His sale earlier in the summer forced me to get Alchemy,now I'm feeling the same tug towards Mach5 lol!!
He is really getting into Mach5 so I'm sure he will be developing many more unusually unique Mach5 libraries.

Simons demos are in the KVR thread link :
http://www.kvraudio.com/forum/viewtopic.php?p=5476038
this is his site : http://www.patchpool.de/
Regards