Cary DMS 700 vs Aurender A300

I believe you're referring to the Aurender A200 as it is comparable cost wise to the Cary DMS 700.  I can't speak of the Aurender as I've never heard it, but the Cary DMS 700 is a real sleeper.  I've owned it for over 2 years now and have no regrets or inclination to consider anything else in this price range.  Cary DMS 700 is made in USA and rarely comes up for sale on the used market and  Aurender is made in Korea if that matters.  Be aware that Cary can do Roon, Aurender is not Roon compatible to my knowledge.

I don't know what Aurender's policy is, but Cary allows a 30 day trial period, you just pay return shipping cost.  Another difference is Cary sells direct to consumer which may be a better value and if you're buying new, Cary Direct runs sales throughout the year if you're patient.