I know in the past this has been posted but no one comments on it. I've been and Esthetician for over 3 years now and I've worked at spa's and used the crystal machines but never the Diamond my concerns are the negtive reviews about crystals and I've notice alot of companys are switching over to organic grains, baking power or walnuts. Being that said I've reserched and those machines are not cheap yikes. I do have the derma files and ultra spatula hand held but was thinking of buying a…