Interesting that you find Pass to be 'lean'. From all my reading of Pass and their lower end heft, I would have thought it provides a bigger, fuller body to music; which is to my liking.
Me three. That really surprises me, but i've not really heard that product. It was mentioned that that integrated is speaker dependent. I wonder why? His designs typically have minimal global feedback, if any, and sufficient drive current. I will say that i -- for this reason among others _ i always work extra hard to have amps (or amp sections in integrateds) that essentially don't care about the speaker.
Anyway good luck with your quest. I dont know your speakers but your cursory overview gives me puase and make sme think maybe they ought o be job #1