Receiver

A reminder that he posted this in the home-theater category.

No, never get a receiver..... The power amp sections should be separate, not in the same box for an audiophile experience, i.e., if you also plan to listen to music with it.

Get a Surround Preamp Processor such as the Marantz AV10 (there are no amplifiers built into it!!!).

Thereafter, get any number of power amplifiers for how many ever speakers you’ve got.

For example, here is a decent Multichannel Power Amplifier.

ATI 6600 signature series series, 300Watts @ 8 ohms, 450 Watts @ 4ohms all channels driven.... Since you can get these with any number of channels ranging from 2 to 7, you could probably get one 3 channel amplifier for the front stage and a second amp with however many channels you need for the remaining channels (surrounds, back surrounds, heights, etc).

Other cheaper multichannel power amplifier options could be the bigger Class AB Rotels, Parasound, Monoliths, etc.

You could also use any of the hifi 2 channel high end amplifiers you prefer for your surround rig, but, the latter approach could get quite expensive.

I like the idea of separates as well. ATI reportedly builds the Monoprice Monolith amps. HSU has been suspected of being involved with the Monoprice Monolith’s subs.

I’ve been running a Marantz 7704 with a Monoprice Monolith 5-channel amp and I’ve found that separates provide better separation of effects, clarity at higher levels of volume, and greater dynamics. Both the pre and the amp have been rock solid for the past 7-8 years.

MAC 7200 is the only receiver I would buy.  In fact, in other parts of the world it is sold without a tuner and called MA7200.  It's the real deal if you want everything in one box.  

I think you are referring to an integrated amplifier? If it were me, I'd really look hard at:

(1) Hegel H400, which is an all in one solution: streamer, DAC, preamp, amp, 250WPC 8ohms and stable to 2ohms. Reviews have been great, and apparently worthy of the upgrade from the H390. New $7,000, used not available that I could find

(2) Hegel H600 Reference, same all in one unit, 300WPC 8ohms and stable to 2ohms. Same great reviews and definitely a step up from the H590. New $12,000, used $10,000

(3) Technics SU-R1000 R DAC, preaamp, and amplifier all in one, 150WPC 8ohms and 300WPC 4ohms