Hi, I've listened to both in my system and the Aesthetix is by far the most neutral. If you want the "CJ sound" then you should go for that one. If you want a neutral pass through for your source components get the Aesthetix.
Aethetix Calypso or CJ Prem 17LS2
I am looking for feedback from anyone who has any exposure to these two fine all-tube linstages. The Aethetix retails for $4500 and the CJ retails at $5000. It is my understanding that the newest CJ surpasses the performance of the discontinued Premier 16.