My experience with 20.1’s may be of some value. Tried a pair of REL’s about 10 years ago, ended up working on the room acoustics to improve bass response. Now raggae music for example (Steel Pulse) kicks me in the gut (like it’s supposed to ;-)). Maggie’s strengths are a result of freedom from speaker enclosures, subs didn’t compliment them at all for me. I found dealing with the back wave using traps and diffusers made the bass very clean and deep. Good luck!
Duane
Duane