700.00 speakers new or used

Crashmars,This is a tough question to answer as you have not listed your amp nor source. Something like a Klipsch Heresy can be purchased used for your budget and rock the house with a flea watt ebay amp. On the other hand, some speakers, for instance some versions of Thiels are going to require many thousands of dollars in amplification.

+1
Also, how big/small is the listening room?

find an extra $100 in the couch for a $1500 pair of German gems.
https://www.accessories4less.com/make-a-store/item/cantvento830.2blka/canton-vento-830.2-7-2-way-bookshelf-speaker-black-gloss-pair/1.html

Q Acoustics 3030i/3050i

Depends upon your listening room, gear and experience/personal taste.

All of the above are MIA in your query.

DeKay

hilde45 did the job for you.

I can vouch for Revel Concerta F12 and Monitor Audio Silver 6. Those two will not tire you after a week, and not only after a whole day. I have listened to both of them for the longest time.

Other speakers mentioned throughout the thread may have better this or that, but these two are good and as untiring as they get, I played them with different amplifiers and it is always that same untiring outcome so throw the compatibility away.