It's the customer service that the company provides, starting with the very first phone call that sets DA ahead of the competition. Parts availibility. Service turn around time. Bench charges.
Ask these questions to all 3 companys.
Service during and after the sale are just as important as reliability and preformance, to me and many many others.
Even Kris will admit that DA's service is second to none. (For John Q. Modeler with no connections)
A HUNDRED BUCKS MORE?
Worth every dime.