Antelope 10MX Rubidium Atomic Clock vs S.S 10M Rubidium Audio Clock

Antelope 10MX Rubidium Atomic Clock has a new 10M rubidium clock called 10MX Rub Atomic Clock, their distributor in my region told me this product’s selling price is around USD 6950 (listed price).

It is much more expensive than Stanford Research 10M Rubidium Audio Clock, does anybody has experience this product? How’s the sound quality improvement compare with S.S.