In your size room, KEF LS-50 without a doubt. Readily available for under $1000. What some consider a lack of dynamics is actually accuracy - a lack of 'boom and sizzle'. Definitely helps if you have a solid 75-100w/Ch amp. Solid stands are required.
Best small used monitors under $1000
What what speakers and associated equipment integrated, cables etc. Small room approx 10x12. What speakers make you want to listen for hours and forget about the equipment or the endless search.
Brian
Brian