What is the best receiver to use with the A90J? Budget up to $2k

Thanks everyone for the replies, I love to see the passion!

So, I just wanted to be clear I’m only using this for watching film/television. 
Listening to music is not a priority for this particular room. 
How does a 2 channel set up work when the output is like Dolby Atmos?

If I’m understanding correctly, the consensus is to only have 2 speakers for the entire home theatre?

...and that putting the money into quality 2 channel will be better than “surround”?

I’m open to the idea for sure — I just never heard of this before (my current gear is 10 years old and that’s probably the last time I thought about it lol)

Thanks again for all the info I’m learning a lot !

PS I only planned to spend $2k on just the receiver... but I’d be open to spending $3-5k to do 2 channel HT... but I don’t have amps or anything. I’d need to sell my current speakers and start from scratch... which is cool if that’s the better way to go. 

Brands/models aside, what all equipment would I need? (Any additional resources you could offer so I can educate myself more would also be appreciated!)

If you really want sound quality over all, then you definitely want a stereo integrated amp and 2 speakers. The performance gap is so great literally any integrated, the worst one you could find, will sound a lot better than the very best AVR you can find. No contest. You could even spend 2X on the AVR, still not match stereo. There’s good technical reasons for this I will be happy to go into if you want.

The Polks you have are $179 speakers. About the quality level you would expect if having to buy 4 speakers plus a sub. A much higher quality stereo speaker would be something like the Mini-Lore for $600 https://tektondesign.com/product/full-range-speakers/monitors-loudspeakers/mini-lore-monitor/#color Tremendous improvement.

The Mini-Lore is highly efficient, 95dB, so you won’t need a lot of power. This opens the door to incredible high quality in a low power amp like the Decware integrated amp https://www.decware.com/newsite/SE34I.htm

Take the time to read carefully. Do not be put off by the low power. The Mini-Lore with this amp will have your head spinning with sound quality you will not believe, all for $2200 speakers and amp. You mentioned 10 years. Decware offer a Lifetime Warranty! You will probably replace tubes a couple three times in 10 years.

You are willing to spend up to $5k. Split the remaining $2800 between speaker cables, power cord, interconnect, and some Townshend Pods, you will have an absolutely incredible system. Guaranteed beyond your wildest dreams. You will be hard pressed to find anyone with better that didn’t spend $25k. Or more.

This system will be highly expandable. The main thing missing is powerful bass. Which you probably don’t want in an apartment anyway. But down the road, add subs, boom now you have it all. Upgrade speakers some day, as long as you stay with high efficiency speakers like Tekton you are golden.

Big leap, nobody else here got the nerve to come up with this. Or the experience. They would, sadly, rather complain, or lead you down the well-trod primrose path. One thing you will notice, the stuff they recommend you can buy anywhere any minute 24/7/365. Tekton and Decware you will have to order and wait. That right there in itself is a clue who is recommending desirable quality and who has the same old same old. I waited 3 months for my Moabs, totally worth it. We got a guy here now 2 months into his Decware. There’s a reason we say these things are worth the wait: they totally are worth it!

So in other words he agrees, I am right- he just wants to have it both ways, talking out both sides of his mouth: it is a step above, but "not to say the step below is bad". What a freaking joke!

Wow, this is the first time millercarbon has gotten really personal and insulting.  I generally try to help with the questions people ask here instead of slamming down and destroying any multi channel approach.

If you really want to listen to millercarbon, go ahead.  In the end, if all you are doing is 2 speakers than buy the best 2-channel rig you can.  If you want your center channel and surrounds, then you have to go AV Receiver or processor/amps.  Millercarbon is going to argue against this all day long with the statement that this scenario is ALWAYS bad and always sucks.  The truth is that many low to mid level multi-channel systems can sound good.  Millercarbon just has a prejeduice against this.

You do not see this kind of argument in other sections/threads where somebody asks "what kind of good preamp can I get for less than $1,000".

Contrary to the belief that there are no quality 2 channel receivers.

There are those that do prefer simplicity 

Although a bit pricey..

https://www.mcintoshlabs.com/products/receivers/MAC7200