I reviewed the website above and like most, it has a few areas out of date but other than that, Keystone seems to be Sage 100 exclusive (and that may be out of date too). Sam's partner Bill Delgado I do recall, he had been a Kissinger in the early years. Sam has a couple of endorsements from people we know on LinkedIn, and a recommendation from Joe Bisaha. Other than this information, I have no other experience with Sam or Keystone. I'd accept his application pending the rest of the membership teams votes. https://www.linkedin.com/in/sam-wandzilak-a0097b/