All-in-one integrated, 10-15K range, class A/B only

+1 for the Aesthetix Mimas. By far the most musical integrated amplifier I have heard. Good Luck on your search.

@sidekick_i 

Thanks for your message. Appreciate your input, the Ypsilon sounds like an interesting addition but is outside my price point it seems. Unless I find one used.

@jamesdowningelliott Thanks for your message. Yes, I think I would love the 509X, heard so much good things about it, and do love the build quality. If my all-in-one plan doesn't pan out, it will be the first I would look at.
@joey54  Yes, will be auditioning the Mimas for sure.

@ghasley Consider me a "burbler" of its aesthetics. I know Boulder always attempts to make their designs standout from the rest, looks wise. But their 866 appears to me as an "accordion ". 
Didn't think it was that necessary to do so and strikes me as outlandish.

They have always spent lots of money on their caseworks. Design wise, the shell of the 866 strikes me as an unnecessary stroke and for me, that is not BS. 
I know its me but as good as it may sound to me for that matter, I couldn't own it because I couldn't stand looking at it.

@arro222 

I like it when a manufacturer executes, takes some chances, innovates and achieves their design goals. The sound quality, check. Versatility and content, check. Angled front and user interface, check.

The heatsinks actually work extremely well, they aren't fragile in the least nor prone to bending like so many designs. They are sturdy and and actually are very convenient when lifting/moving the amplifier.  They provide a wonderful non slip way for the finger to grip while placing the 866. They are not, however, capable of slicing cheese or your fingers like most heatsinks.

Cool with me if you wouldn't consider owning it. That's what makes things interesting.

I for one am a fan of the 866 design, especially the tilted front portion that makes the touchscreen actually usable not just a gimmicky nice to have.
in some ways it’s design is why it’s also number one in my list.
but of course everyone has their predilections.