What are the best subwoofers you have heard for music. Speed, Musicality and integration

It’s the way they connect. They keep up with the music. The speak on connect is key.  Also they don’t try to hit ridiculously hard which with music would sound unreal.  They are nimble and easy to integrate. 

@mahler123 tell is your thoughts when you get them in 

@sns  I agree. Rel all day. 

I posted elsewhere but the new REL in my basement 5.1 HT system, which replaced a Paradigm sub, adds that bottom octave for music seamlessly.  The Paradigm by comparison was MIA.  I need to fine tune settings on the REL a bit but I am very pleased