50 sq meters is a pretty good sized room - so I’m hesitant to suggest a speaker with a driver smaller than 6 inches... (and that might be pushing it)
But a few to research:
Wharfedale Denton 80th, or 85th Anniversary (6.5 inch driver)
Elac
Kef LS50
Monitor Audio Bronze
Focal Aria 906 - Music direct has an open box pair for $999 ($500 off!)
ATC SMC series - might be able to find a v1 in your range.
Good luck with your search!
But a few to research:
Wharfedale Denton 80th, or 85th Anniversary (6.5 inch driver)
Elac
Kef LS50
Monitor Audio Bronze
Focal Aria 906 - Music direct has an open box pair for $999 ($500 off!)
ATC SMC series - might be able to find a v1 in your range.
Good luck with your search!