None so far, I guess if I have to write something would be that the refurbished models do not come with the brew-though lid/top. Also, no bells and whistles, i.e., timer, grinder.
I bought a Refurbished Technivorm Moccamaster CDT from Boyds Coffee. It looks brand new and I saved over $100 from a new one.
I gave this as a Birthday Present to my good Friend and I have brewed about 10 pots so far. I have a Bunn Thermal at my home and have been using it for over 7 years. I am quite pleased with my Bunn after I got a restrictor nozzle for it but when the Bunn dies I am buying a Technivorm Moccamaster CDT. This Technivorm Moccamaster CDT makes incredible coffee.
The Technivorm Moccamaster CDT also looks great on the countertop.