Non fatigueing speaker under 1500

I too am on a similiar quest. One possibility is Spendor loudspeakers. I'm familiar with the S 3/5 and if the larger
models are voiced similiar but with greater bass that might
be the ticket! Another possibility might be Vienna Acoustics "Bach." I have not heard this loudspeaker personally, but I might that the plunge sight unseen because
I like the size, appearance (Beech finish), and price. Vandersteen 2Ce Sig. could also be a possibility. I owned the 1B for a time and I enjoyed them. If the size doesn't
bother you they are a good choice. I don't know if video
shielding is important to you. The Spendors and Vienna Acoustics are shielded, I believe, however the Vandersteen
are not. If you are near a Snell dealer you might want to check out a Qbx series floorstander. I have no idea how they sound but if they sound somewhat like their older products that's good. Speakers with soft-dome tweeters are probably a better choice for the sound you're looking for.
Hope things work out well. Bill

I'm a fan of the Magnepan 1.6QR: very seamless and coherent, spacious, clean high frequencies without
sounding harsh or brittle. It retails for slightly
more than your specified $1500, but is occasionally
available for $1100-1200 on the used market.

Second the vote for Spendors...the 2/3s or possibly a pair of 1/2s used. My experience is that the more you listen, the better they sound. Heavy, solid stands improve the sound of either speaker and I found that biwiring is beneficial with the 2/3s...don't know about the 1/2s.
Good Luck!

Soliloquy 5.3 Used or b-stock. Do a search for the various
reviews.
Sheldon

Spendor's new S6 is my vote.