You've got some great recommendations here. I'll add the Joseph Audio RM7si, Silverline SR-17.5, and Amphion Argon 3s, all available used now. Sorry to make your job harder, but these are all worth a look given what you're looking for.
https://tmraudio.com/speakers/bookshelf-monitors/joseph-audio-rm7si-signature-bookshelf-speakers-che...
https://www.audiogon.com/listings/lis97fd1-silverline-audio-sr-17-5-monitors?refsource=hifishark
http://www.audioasylumtrader.com/ca/listing/Speakers-Stand-Mounted/Amphion/Argon-3S-Monitors/-home-v...
https://tmraudio.com/speakers/bookshelf-monitors/joseph-audio-rm7si-signature-bookshelf-speakers-che...
https://www.audiogon.com/listings/lis97fd1-silverline-audio-sr-17-5-monitors?refsource=hifishark
http://www.audioasylumtrader.com/ca/listing/Speakers-Stand-Mounted/Amphion/Argon-3S-Monitors/-home-v...