Best Smaller Bookshelf Speakers For Use Exclusively With Ambient Music?

The budget would be $1000.00 or under, new or preferably used. Yes, the speakers will be on stands. The integrated amplifier in the system is a completely refurbished, rare and classic vintage model. 

And please remember to take into account the music that I pointed out will be played by this system. There is not a lot of bass, but the requirement for a wonderful, golden midrange and highs is critical. 

Ascend Acoustics Sierra2.

SEAS woofer with RAAL ribbon tweeter in a bamboo cabinet. Around 7-8 hundred used. A lot of speaker for the money. There's a pair for sale now on USAM.

while not much thump, I find ambient music often has lots of deep bass...I'm currently using Audience 1+1 and REL T/Zero lll in room same size as yours...I found used for under your price limit...

if a rear ported speaker is okay look at a used Ref 3A de Capo.  detailed, rich sound

Totum Mite (already mentioned) is worth looking into as well as Totum Sky.

Sonus Faber Lumina I or II might work depending on the amp.

I like the small Silverline and Reynaud speakers, but did not see any for sale on the used market.

There is one pair of Reynaud Twins MKII listed as "pickup only", but the ad has been up for 6 months (I'm 99% certain that they are my old pair -  per the pics/slight damage to one back corner).

DeKay