Audioresearch VSi75 VS. PrimaLuna

I do, go with the VSi 75, 100%. I chose that amp for my Sonus Faber Amati Futura and have no regrets. It is wonderful with SF speakers.

Personally I found the Primaluna dialogue premium to be more musical.
The VSI is very clean, quiet and detailed.
The PL is as detailed and quiet but has a more organic feel.

No offense intended but the Prima Luna doesn't play on the same field as the Audio Research VSI75 nor should it considering the price differential. I think the world of Kevin Deal, Upscale Audio and the Prima Luna equipment. It is some of the most versatile and easy to live with tube gear available today. You can tailor the sound to you liking and roll the tubes to taste. The VSI75 is at another level or two of clarity, texture and tonality. Unlike the Prima Luna, there is really no opportunity for tube rolling unless going from KT120's to KT150's. The Audio Research integrated is not for the tweaker. Have owned some incredible integrateds over the years and the Prima Luna is a terrific amplifier in its price band, the Audio Research is one of the best integrateds made...... period.

Since you don't care about $, would you sponsor my rig? A few measly thousand should do ;)

I know you are looking at an integrated, but I auditioned the VSI75 against the ARC ref 75 power amp, hoping to buy the former. Unfortunately the Ref 75 was in a totally different class. It forced me to switch from integrated amps I have been using for 10 years, to a pre power. It matches beautifully with a little passive pre.