???YOUR Personal Favorite???Why???

I like my current standmounts, Marten Parker Duos. I first compared the Marten Oscar Duos against the YG Tor and the Dynaudio Heritage Special, and preferred the Martens for rock music, which is what I listen to. Then I compared the Oscar Duos with the Parker Duos and went with the bigger ones; incredible midrange... I pair them with an MSB S-200 power amp and a Herron Audio tube preamp....

 You already know that's a loaded topic (speakers) for all audiophiles, Way to subjective when dealing with human listening and hearing, for example speakers that I preferred 10yrs ago may not be same today, I usually build my system around the speakers and the particular genre of music I love, as a former professional musician, recordings (playback) along with room size is a major component and not always in how much money one spends.

MBL 126 with MBL electronics - clean, clear, ample bass

Harbeth M30.2 XD with Hegel H390 or better - great musical combo

Joseph Audio Pulsar Graphene - big fan of Joseph Audio sound 

Cabasse RIALTO - small size, big sound including ample bass. Demoed twice at audio shows - many commented they seemed underpriced for the great Sonics they delivered

Agree that at 15k, floorstander is better

ProAc Tabulettes. They image and disappear like few other speakers regardless of price.
 

Closer to your top budget I’d second the MBL and German Physics Omni speakers. 
 

A shoutout to adding a Rythmic sealed sub or 2 and high passing the stand mount speakers for a complete presentation.