BEST SPEAKERS AT A REASONABLE PRICE

—> Monitor Audio
—> PSB Imagine 
—> Golden Ear Triton

I strongly second the  Magnepan 1.7i.  If you have a lot of power and add a REL sub the sound will be hard to beat.

+ The Maggies are cheap, but their power amp requirements raises the cost of ownership.

Millercarbon is right in that if you really care about good sound that receiver is not going to cut it.  If you just watch video it will be fine with Best Buy speakers but you’ve come to the old guys here to learn about how to make your music sound great, right?  He’s also absolutely right about a center channel wrecking your sound:  2- channel is where it’s at for the best sounding music.

Wc1 is also right in that most of the recommendations for speakers you’re getting from here need much better and more expensive electronics to make them sound good.  
So here you are.  Getting mostly advice from old guys with their favorite traditional stereo stuff.  
You may be in the wrong place.  
Instead, have a look at this:

https://swanspeakers.com/product/m3a/

And go watch this:
https://youtu.be/YEx1_-wmgNI

of course I could be completely wrong and you really do want to join the ranks of us perpetually dissatisfied cranky old farts.... 

I like the idea of active speakers as they will sidestep the issue of amplifier adequacy. While I believe most actives are class D, my understanding is since they are voiced with the specific speaker in mind you get more positives out of that synergy than you give up in the arguably inherent weaknesses of class D. LS50s also come in active configuration with direct streaming and DAC built in. Not listened to them myself but heard good things.