Marc, I think you are going to like the 55's..I think in small rooms you can still use the Yorkville's [1 or a pair]..They sound just as clear at softer volume levels..The one thing I wished my 520's had was a lower bass response[I use a sub woofer because we do dance music]...They answered the bell with the 55's[45 low frequency]..Even the great Mackie 450 doesn't go there....

You did good