All good advice from the knowledgeable among us. A room is a room, but let's not forget some other factors like better driver integration with crossover and cabinet, greater speed/linearity of lower mass woofers, or a better production run of drivers which can be all over the place. Not to criticize the designer but some variables do creep in.
I had a similar experience albeit with different monitors from different manufacturers. After some high-priced specimens, I settled in with some well-designed and -implemented models that cost a fraction of the others, yet I've had and enjoyed them for two years now, an eternity for some of us. The room certainly didn't change and the system remained constant. I guess I just found what I was looking for. No sub either, as I'm afraid of upsetting the balance, and the bass quality is quite good in this 14 by 15 bedroom.
Good thread, but I would not 2nd guess your sophistication. Call it a preference and enjoy the music.