Integrated Amp Upgrade-itis hitting....

Thanks again guys. Interconnects are Blue Jean cables and speaker cable are Spelt Anti-Cables. I never bought in to the exotic stuff, I sense some snake oil with some of the claims...

I wouldn't buy a new integrated without listening to at least one good class D.

https://forum.audiogon.com/discussions/class-d-is-just-dandy/post?postid=1435239

beernut,
Owned the marantz 8005 and was very favorably impressed.  It drove my magnepan 1.7's beautifully.  (I liked the sound better than a well known $3000 hybrid power amp that is well regarded by many)  I was so impressed I sent stuck with the brand and upgraded to the Marantz Refernce Series.
Marantz gear is very musical, never offensive, images very nicely and has testicular fortitude when called upon.  It never seems to get flustered or come unraveled.
Can't imagine going wrong with this pick.

Thanks all. Most think the Marantz is more of a lateral move versus a true upgrade. I have contemplated the Rega Elicit now as well...

You might add the upper tier Yamahas to your list, maybe the A-S2100. They sound great, look great and have impeccable finish. 50 lbs of good ol' class AB MOSFET grunt. I have yet to hear an integrated amp that produces more accurate piano and string tones (to my ears of course). They are very neutral overall. 

The strength of the Parasound Halo is "body" in the midrange and upper bass. It makes for a very smooth listen but doesn't sacrifice much in detail. It can also drive just about any speaker with ease.

Tube integrateds will typically have a more 3D soundstage, but as mentioned, can become expensive in the long run for tube rollers. That said, if you've never owned a tube amp, you owe it to yourself to give some a try. I waited far too long to venture into an all tube amp. There's many great tube integrateds that are relatively affordable, especially in the used market. The Raven Audio Nighthawk is highly regarded, as is Prima Luna Prologue/Dialogue, Line Magnetic (various models) Cayin A88T, and Rogue Audio Cronus Magnum, just to name a few.

A very good, under-the-radar, but somewhat spartan amp is the hybrid tube/MOSFET Croft Phono Integrated.