Bookshelf speakers with the good bass.

You can still find BM15P on line and new - but it may have been discontinued so it is not available everywhere.

The 10 inch woofer has a 4 inch voice coil and along with the esotec tweeter this is a very serious speaker for the money. Of course it will look butt ugly but given your price range I suspect it will be hard to find something beautiful aesthetic stand mount and yet still get you the bass response you want.

The midrange will not be as forward as the Harbeth (it probably has a bit of scooped midrange - like most hi-fi speakers do) but it is very much in the direction you seek.

Totem Mani-2s have excellent bass ((to ~30Hz) and sound great top to bottom. You need lots of power for them though.

Yes that is an option and much more aesthetic than anything I suggested.

Infinity Intermezzo 2.6

I have a pair of Revel M20 - Awesome bass
I heard that new M22 is not as good as old M20
Best
Thuan

Save yourself a ton of $$$ and get the NHT Classic 3.
I had them in a room almost identical to yours using both tube and SS. They sound fantastic for the price and they have beacoupe bass.