I still own the MC402s, I just “leased” them to my father’s system until I finish my commitment w/ the fed (someone has to pay off my 120k in student loans). I switch to a new location every year, and the 402s became a BIG burden. I love the 7B SSTs! I will take the Brystons to my dad’s and do an A/B comparison in the new future and post my findings. I can’t give an honest comparison between the two at the moment, as I had the 402s in a dedicated and treated room and the SSTs are in a temporary space w/ no treatment.