VR4SR vs Opera Callas Divina

I m considering the purchase of an ebony VR4SR. It was highly recommended to me by an audioconsultant. I heard the demo of VR4SR. Its bass sounds good to me. Currently I m using an Opera Quinta. Like the look of Opera Callas Divina but didnt have the chance to audition it. Based on stereophile reviewer Sam Telig its seems good but certainly looks pretty. What do u think ? TQ
System consists of the follow
SET Integrated Amplifier Unison S8 ( considering upgrading it to Unison Performance ). Cables/power cord - Transparent reference. Exact power conditioner and Transparent Isolator XL