Pass Labs INT 60 VS. Primaluna Dialogue Premium HP VS. Arcam A49

The Pass Labs dealer says the INT 60 will work tremendously with my Sasha 1's. He says there will be a huge difference from my Arcam A49. The Arcam A49 has the power and is very good and my Arcam dealer says I would need to spend over 13K to really make a difference. My Primiluna Dialogue PREMIUM HP dealer says this tube amp will better the Arcam and the Pass Labs & will work incredibly well with the Sasha's. Since I have to order the units I have no way to try them out with the Sasha's. Wilson Audio believes the Primaluna Dislogue PREMIUM HP would work very well, as well as the Arcam & the Pass Labs. 

The dealer won't allow you to do an in home listening test??

Find a new dealer.

Kenepeters-

looks like you have plenty of information to digest here.

This recent Stereophile review on a speaker of equivalent retail price may have some value. The 2nd page mentions the HP able to produce satisfying performance against some upper end SS amps. Not the exact specs as your speakers, but more perspective on the HP which may be useful. 

http://www.stereophile.com/content/yg-acoustics-carmel-2-loudspeaker-0#GIFxXDoBW4Em47mP.97

All of the technical stuff mentioned along with end user worship of the HP won't replace an audition. I took a leap of faith and purchased one only because of owning a lower level model for several trouble free years. Fortunately, I  picked mine up before the MSRP increased! 

It's encouraging that Wilson Audio themselves gave a strong reply in regard to the P.L.Premium HP and didn't attempt to steer you towards SS amplifiers exclusively. This is a very good endorsement from them as they're obviously  intimately familiar with the Sasha. 
Charles 

Pass labs INT-60 is terrific.