Budget?

Zu Audio - Dirty Weekends $999 or Magnapan LRS for $650 (these have been getting great press lately)

Chane A5.4

Don't get hung up on towers.  There are monitors that can be as good or better than floorstanders.  ATC speakers can rock your world, but they need some power to really sing so your Yamaha need not apply.  Here's a nice pair...

https://www.ebay.com/itm/133043112683?ul_ref=http%253A%252F%252Frover.ebay.com%252Frover%252F1%252F7...

Again, what is the room size? It is easier to purchase stand mounts used (shipping). Can be more easily sold (again, shipping).

Check out Elac!
https://www.musicdirect.com/Search?searchterm=elac&sort=popularity%7CDESC&page=1&pagesiz...