That’s a tough one man, I switched over from trying to be a headphone fanatic to stereo because I see the potential from a better system, initially I was with my AVR and using my home theater speakers for audio.
It’s really difficult to say what you will or won’t like, if you have any local audio shops I would try to demo what you may have in mind. I do see you’re wondering about Zu’s, I mean you can give it a shot, and honestly try not to shoot for the stars.
Everything is a factor, amps dacs etc.
But just like anything else, measurements CAN be very beneficial for room dependency and much more.
The only issue I would say is speakers are far more expensive than headphones so it’s a tough one, I currently went from 600 dollars per speaker to 2500, so 4 times the price did give a far better performance. Yet, after going to some demo nights, now that my area is virtually fully open, I am really in love with Magiko. Those speakers wipe the floor with mine, especially at low level listening but run for 13,000. I heard a few other brands as well, but nothing got my attention like those.
My point being is that I don’t know if something as close as double the price of what you currently own will do the job. But you’re honestly in a range where something cheaper or equivalent or a bit more may just be your flavor.
You must remember that coaxial design, 2 way, 3 way etc in addition also play a roll.
Honestly simply even, if possible, pulling speakers away from the walls as humanly possible makes a huge difference.
Lastly, if you got the option, and to my knowledge in wall speakers are also great if you want to avoid pulling the speakers all the way out.
I will add in a side note on my last paragraph, is I started doing some shopping around. Great way to waste money. I was in search for an amplifier, I was going to drop about 2500 to 3000 yet nothing really fit the script of what I was seeking. I bought a vintage denon flagship amp which wasn’t bad honestly, got a pair of kenwood mono blocks; those were better and I think eliminating crosstalk was something grand to experience.
I ended up getting another vintage unit, parasound hca-1000 and damn. My system is exactly where I wanted to be sonically. I mention this as you said you got parasound. So now I want to up the whole situation for something with real juice to power my speakers. So I got a pair of HCA-1500’s and running them bi-amped with my strictly stereo setup and I mean I am completely blown away.
It’s a learning experience, for me I learned class A is my cup of tea. This is why I’m suggesting you just see if something else might float your boat. Even in the same price range, unless you’re really looking to make some leaps.
On another note, I suggest demo’s cause those revel F328Be, at nearly double the cost of what I own now and has flawless measurements was not enjoyable to my ears. Honestly feel and will get tons of hate saying my speakers at home in non-acoustically treated room sound better than them in a proper room. Yet, that was the same room I heard the Magiko and those speakers are on another level. Even the bookshelf speaker which is 9k is far superior to my setup.
Sorry I love to ramble on, just don’t be fixated on one thing, whether it be speaker amp or dac. Give whatever you can a shot, even Zu’s, but try to get as many options as possible to make the right choice. You can’t demo everything