New speakers for 15*12 room powered by Lamm 1.2s?

 Attending the Seattle show this week. Thinking about upgrading my Thiel 7.2 speakers which I have owned for over 15 years.  I have a dedicated room. My Thiel's are powered by Lamm 1.2s direct from a PS Audio Directream DAC Mk1.  I am separately looking at upgrading the digital sources and potentially adding real to reel to my system.  Through room treatments and upgrading the Tubes in my Lamm's  I have been able to get a lot of the brightness out of my Thiels but I am still looking for more warmth and definition. I listed to a lot of female vocalist music, acoustic/electric guitar.  I am told the Borreson X3, X6 are an incredible value.  Any  recommendations to consider? Thx