I'd like to try it with two very different speakers: a pair of tiny Sonus Faber Minima (the original ones), which go down to about 70Hz, and then a pair of Ocellia Kedros, which have the famous PHY driver. It has deep bass, but I think it would benefit a lot from something that takes over under 80Hz.
As for space, it's more a matter of look than space...the Paradigms look cool, while most subs are ugly black cubes.
Thanks