Small monitors/bookshelves for classical music


I currently own KEF iQ5 floorstanding speakers and ROTEL RB980BX Power Amp. I listen to classical music(Bach, Mahler, Wagner, etc). Though KEF iQ5 lacks deep bass, I am completely fine with that when listening to classical music.

I am seeking to buy a pair of new/used monitors/bookshelf speakers. I want a truly "bookshelf" speaker which can be put on a desk or even a bookshelf. I will not put them on stands. Neither will I pair them with a subwoofer. But I will pair them with this ROTEL RB980BX. ROTEL RB980BX is very powerful, 120W/ch. I can spend below $600.

After doing multiple painful searches online and on this forum, I have several potential speakers/monitors in mind.
PSB Alpha B1
B&W 686 or 685
Paradigm Mini
hl10027
Rlwainwright and Schubert mentioned KEF 103.2. This interests me.

BTW, what do you mean by KEF sound? Since I listen to no other speakers substantially, I do not know if I will prefer other kind of sound. Moreover, is my KEF speakers of the typical "KEF" sound?
Dear Zmanastronomy, Tekton design highly interests me. They looks just cute. I saw it was rated as "best value under 1000" on audioreview for its Tekton Model OB4.5. But they might be very hard to resell, compared to B&W, PSB or KEF.
Silverline Minuet Supreme speakers have a list price of $699 but perhaps you can find them on Audiogon within your target price range.
There not hard to resell at all. It's a very desirable speaker.
Eric at Tekton Design is growing in popularity by leaps and bounds. His speakers have put a lot of the ones that have been mentioned here on the 'for sale @ AGon" list.
He also has a 30 day return policy.
I'm not connected in any way to Tekton Design except through ownership of his products.
Have a great day. John JW Audio