"...strong preference for integrated amps with a built in DAC. Even better if the unit has a streamer as well. Otherwise I am planning to use Google chrome cast (is that a bad idea).
As of right now my list has Hegel h360, Lyngdorf and Moonaudio 340i.
I am planning to buy used. That means new prices probably could be as high as $10000."
Based on my recent experience buying ’pre-owned’, the spec you’re trying to match, and the units on your shortlist, Micromega M-100 or M-150. Hell, if you’re targeting new srp $10K, you could buy the M-100 new & fully equipped (+ MARS room correction) within your used budget, and I’m bettin’ it would match if not beat anything else ’pre-owned’ at its srp new. You could probly even get some motivated dealer to sell you a new M-150 at your budget limit (sans room correction).
And no, Chromecast for Audio is not a bad idea as an additional source, contrary to what some special-interest parties may claim. With the right all-in-one integrated you won’t be using the Chromecast DAC anyway. Also, there are some modest (< $40) h/w additions you can do that allegedly ’jack’ its performance. I’ve done the additions but haven’t measured before/after.