nenjoyment,
Congrat on Deon 3805. this is a great piece of equipment and i'm still learning it.
I think M60's bass is good enough for me. I rarely play loud. I even try one of the techno type cds i have and the bass is tight and not boomy , even though it's not like thunder with a sub.
I'm sure you'll be happy with M60+sub. To me, i don't see one setting can play all modes either M60 alone or M60 with sub. I'd prefer music with M60 alone and I'm happy. I had a chance to listen to B&W ( don't remember the model, but it's floor standing) at local Myer Emco dealer. It sounds awesome, but it costs!
anyway, enjoy.
