I sent my 65000 to have the CPU Fans replaced. Flex received it on Thursday and shipped it back to me on Monday after Greta Jones repaired it. I received it on Friday and have it up and running. I doubt you can not receive better support anywhere. Well done Flex.
I think have owned a couple of Flex products and never needed to actually send on in for work but I feel that Gerold's points requires emphasis... the customer service is surely second to none in the amateur radio transceiver world. Compare this to my first ever transceiver, an Icom. I bough one used and it had an undisclosed problem. I sent it to Icom for repair and after 2 months i called to find out when i might expect it back. They had not even got around to opening up my rig! I had them ship it back to me unrepaired and I sold it "as is" with full disclosure at Dayton.