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

Totally agree with Trudat. The OP asked about 3 specific amp brands and this what advise should be given on and not convoluted sales pitch on a totally different brand. Unfortunately this is happening on many threads on Audiogon.

@roxy1927  Thanks.

@audiotroy   Can you and others expand on why an amp with a "recessed midrange" is a good/recommended pairing with "warm speakers?"  Thank You!

the Dali Epicons are warm speakers an amp with a recessed midrange would be a good thing.

OP: while I appreciate your seeking advice about 3 specific brands from the forum, it seems like you need to audition them in your system. All the banter here will not resolve the ultimate question. 

Audiotroll can't post without upselling or steering in a sales pitch...  he's right they are the new car saleman of Audiogon....