Impressions: $1k-$2k integrated amps

@helomech I have the A-S801 (i think in part due to previous recommendations by you). I love it. Is the 1100 a substantially better sound? have you heard the 2100?

I don’t have direct experience with the 801, but assuming it’s better than the A-S500 residing in my closet for a rainy day, I don’t know if the 1100 would be a worthwhile upgrade for you. The MOSFET-based Yamahas give up some of the PRaT and dynamics of the bipolar Yamahas (500/501/801) in exchange for a lush midrange and larger soundstage.

More likely to get a substantial upgrade by stepping up to the 2100. Otherwise, I highly suggest considering Schiit separates. I recently purchased their Freya+ preamp and it’s a ridiculous value, an industry disruptor IMO. I imagine a Freya+ into a Vidar would sound very nice.

I may have missed it but the OP didn't seem to offer up what speakers he'd be pairing an amp with.  There's no point in suggesting an amp without knowing if it might clash with the existing speakers it'd be driving.

For instance, the NAD C375BEE I had sounded very plain with Totem Acoustic Rainmakers.  The NAD retailed for $1500 and was 150 WPC.  It looks like most of the amps on the OP's list are under 100 WPC, and therefore would run out of steam if driving the Maggie LSR's that have been mentioned.

For up to a $2000 budget, I'd suggest getting adventurous and getting a Schiit Freya+preamp, it really is an industry disrupter.  Their Vidar amp is superior to anything under $1500 that I threw at it, but again, it would depend on the speakers.  With high efficiency speakers, the Schiit Aegir is on Stereophile's A list.

Thanks for the thoughtful insight guys!  Love the Primare, Anthem and Yamaha impressions - these are just what I’m looking to gather. 
Regarding Speakers, I have a few:

Wharfedale Diamond 10.7
Rega R5 (With RS tweeter)
Rega RS1
Wharfedale Diamond 220
KEF Q100

they are all pretty flexible IME so far. 

Wait for a NAD unit with a Purifi amp module. The only one so far is the NAD Masters Series M33 at $5K (I think). Do some searches here on Purifi.

Any thoughts on these speakers with these amps?