@liquidsound - I've been using the NOS mode over the last couple weeks. Before the update, I thought NOS was too dull sounding, but I'm liking the way it sounds now.
However, I haven't done any critical listening since shortly after doing the upgrade because I sold my woofer towers and haven't finished the replacements. My mains (open baffle planar magnetic line arrays) only play down to about 170Hz and rely on separate open-baffle woofer towers for the bottom ~3 octaves.
I just picked up the cabinets, drivers, and amps this weekend so need to get them assembled and wired up - hopefully in the next few days.