Which would you choose; Pass 250.8, arc 75SE or luxman m900u?

Jump on a Pass 250.8 great sounding amp.

@erik_squires I already have the GIK acoustics treatments and they transformed my room in an incredibly positive way. However, I was trying to be audacious and put in a big floor stander into my very small room. Thus the investigation into DSP preamps to go along with the GIK treatments. However, like I mentioned above the Luxman was so good that I will get that first and fit the speakers afterwards. I most likely won’t be able to fit in a floor stander. I will try with a home demo of the Paradigm Person 3F but in the likely case it won’t work there are many monitors that I can select.

So farI have heard the following monitors that would fit my room which I think sound good to great:

Harbeth - https://harbeth.co.uk/special-editions/c7es-3.php
KEF LS50 or REFERENCE 1
TAD ME1

A lot more choices available that I have not contemplated since I have been looking at floor standers prior to my eureka movement with the Luxman’s.

BTW - I have not spent any cash yet on my system. So glad I did not since I would have gone a different way prior to my Luxman audition.

Luxman in the blink of an eye.