I too have heard the MBL 120, as well as 126 .
since I wil be using dual SVS 4000 -SB subs , the 126 has the exact same Tweeter band Midrange as their top 101 speaker ,the126 have apposing sing 5.5 inch long throw opposing midBass drivers which is perfect for me $16 k with the matching
stands ,and are a must to get the most out of these speakers the stands have isolated cut outs that direct couple the speakers bolted directly to them.