B&W Nautilus 800N . Best amp & preamp setup ?

HELLO.

I own a pair of B&W Nautilus 800N speakers. Truely a great world class speaker. I had sold my JM Lab Utopias after buying the B&W Nautilus 800N.

Currently have several different setups of solid state and tube, hybrid front ends for these the 800N.

From Pass Labs, Threshold to Audio Research and Lamm. I have not been able to make a final decision on what setup to use with my B&W Nautilus 800N.

A little input from fellow 800N or 800 Signature owners is greatly appreciated. Thank you -Bob