I can tell you it was a major difference in the clarity on the Studio 80s. Set to small and the sub back to lfe-main and increase the x-over on the sub to 100. Still need more subs to fill out the room. Would a 600 be noticeably different than the 500?

LFR1100
VP180HP
EP600
M3 In Ceiling x 4
M5OW
M2 - Atmos rears
ADA1500.5
M3 Outdoor Speakers
ADA 1000.8