Help with picking new integrated for under 3k

Why no mention of the Peachtree Nova 300? I bought one last year and am beyond satisfied, probably the best audio purchase I've ever made. Killer DAC, silky smooth and 300WPC.
At $2,300 it's a steal IMHO

Emerald Physics Integrated would be a nice choice too

The Peachtree Nova is now actually $1999 new from Peachtree. They have a deal at the moment to upggrade the Nova 150 and 300 to 500 level. There should be a wave of these refurbished 150's and 300's on sale from Peachtree soon.

https://www.peachtreeaudio.com/all-products.html

I am debating whether to trade in my NOVA 150 and pay $2000 to upgrade to the Nova 500. The 500 has more power, a better preamp, and better DAC. Got 2 more days to decide.

First off just want to extend great thanks to everyone who has chimed in. A lot to research and a lot to think about. This is what I was hoping for in posting - a bunch of different suggestions and perspectives, so again, greatly appreciate it!

To answer @tlinkie there's nothing I strongly dislike about the Cambridge per se. It's a wonderful amp, an exceptional value, and I've enjoyed it for 2 or so years. As mentioned earlier I am wanting to move it to a second smaller system which is part of the reason I'm in the market.

If I had to say what I wish the cambridge improved upon in my current setup it would be a wider sound stage with stronger placement, better articulation, a little less bright, and some more heft behind the sound overall. I think I can best describe it as sounding a bit thin and not so sure footed with instrument placement on tricky tracks. I think it works wonderfully for most classic era jazz but if I put on an album like Herbie Hancock Headhunters it leaves me a bit underwhelmed. The strong, very present bass throughout gets a little flabby and lost and it struggles sometimes with the treble being overly harsh. When listening to MFSL Miles Davis' Someday My Prince Will Come last night, although I was pleased and engaged with what I was hearing I couldn't help but want the music to reach me more. And by reach I mean in the actual physical sense, the notes seem to fall short quickly and space between is lacking. Anyways, wrote this quickly and hopefully that makes some sense! 

Thanks again everyone!

@sammyshaps -- great description of what you're looking for.  Given that, I think you'll be very pleased with the Hegel.  It will certainly tame the highs a bit while adding more heft and meat on the bones in the mids and bass.  I think you'll also find the soundstage will expand in all directions and elements within the soundstage will more solidly and believably occupy their own space within the stage. 

The M6si might work too, but I'd be less confident recommending it over the Hegel.  Read some reviews and see which one more reflects what you're looking for if you haven't already.  I think the MA6500 will roll off the highs to much given what you're used to, but I could be wrong.  Again, best of luck.