Goldenear Triton One R vs. PSB T3. vs. Spendor D7...

The hot tweeter stuff is a bit overblown I think with the D7. I've owned a pair since February and it really has mellowed out over time. However, if a recording is bright to begin with it will not soften the blow. A bright recording will sound bright because these are accurate speakers. The midrange is also forward, so if you are in a small room it will possibly sound to in your face.

Pairing with Tubes or Class A SS seems to be the way to go given the choice, but I've got a class AB SS amp and don't have many qualms. Just the itch to try tubes!

For what you’re looking for, of the three I’d think the Spendors would be your best bet.  However, in that price range I’d hands down choose the Joseph Audio Profiles over any of them.  JA speakers are outstanding when it comes to imaging, soundstage, and pulling off a disappearing act, and the Profiles benefit heavily from “trickle-down” technology from their pricier stablemates.  Just my $0.02. 

Yup.  Instead of the D series, consider a Spendor speaker from the Classic line.  https://www.spendoraudio.com/classic-loudspeakers/

Shahram
I have both, Rogue Audio monoblocks and April Music Stello ai500 with a built in DAC. Both power up more then what the D7's need. The tubes can take EL34's, might be the ticket.

Soix
The Joseph Audio Profiles are nice and I heard them with a Rogue amp. However they are rather small and might lax in the bottom end compared to the Spendor's and the others.