I have have the gram Slee Era Gold mkV -> S&B TVC -> Art Audio PX-25, it is a pretty amazing setup. Dynamic as all get-out.
But, I have also been wavering about switching to an Art Audio Vinyl One. The PX-25 and their other amps are so good, I'd expect the synergy with the Vinyl One would be incredible.
Of course, a more fair comparison would be the new $1,800 GS Reflex and Vinyl One.
George Wright makes incredible tubed gear. All his stuff is designed to work with 100+dB horns, so they are incredibly quite. You really can't go wrong with your choices, but I'd go for a used AA Vinyl One if it was me.