Should I got full tubes or stick with hybrid amps?

Why not try to score a Jolida 102 or a 202 (202s are available on ebay all the time), and then you can do your own comparison, which is going to be more reliable than what anyone can recommend here (actually the only reliable test).  If you prefer the 1500, you'll be able unload the 202 for pretty much what you paid for it.  If you prefer the 202, sell the 1500.  In the end, you'll be out maybe $100-200 at most, and you'll feel you know for certain the answer to your question.

@jdane   

Good idea. I'll check them out.  

I own both a Raven Blackhawk MKIII (tube) and a Pathos Acoustics Classic One MKIII (true hybrid) both are great integrated amps but the Pathos has a better soundstage and is way cleaner.

Buy a Pathos and put it all to bed. 

@soundchsr

I'm still learning but my guess is that

(a) your corner windows are a problem, as is the glass front on your fireplace
(b) you have different items behind the two speakers (asymmetrical)
(c) your first side wall reflection points are an issue, too
(d) glass framed things are a problem.

I cannot see your rear wall.

So, my guess is diffusers and absorbers in various places.

Watch some Acoustic Fields videos as a starter. Here's the first pull on that thread:

https://www.youtube.com/watch?v=ZQIV341IUCg&ab_channel=AcousticFields

How would you treat this room?

https://ibb.co/pJ0pxVx

I gather you listen quite a bit from your desk.

1. In my office, I re-configured my desk, no drawers on the right, so that I sit off-center of the desk, thus centered on the speakers, and the monitor also centered on the speakers for all the music videos I stream.

Never better sound/imaging in my office.

2. Next: dogs OUT, the breathing, scratching, licking, lip smacking, farting of large dogs is not a good mix with concentrated listening.

3. I might try tilting those speakers up some, just to hear if any difference.

4. Do you pull that black chair out in front of your desk for focused listening? Slightly angled up might reduce tweeter’s output, may be advantageous regarding fatigue from such close focused listening.

5. Tubes: I say yes to all tubes, perhaps try something you can return or sell without too much loss.

two concerns.

a. speakers 88 db sensitivity, needs more power, i.e. 4 power tubes each side,

b. thus more heat. It seems like your equipment is behind those closed cabinet doors? Tube amps, especially that size tube amp wants lots of air for heat to escape.

6. Integrated Tube Amp, with remote volume, tone controls, and preamp bypass to bypass the tone controls if you want. Tone controls may be the best solution to your fatigue issue, neutral or adjusted for particular music.