Thinking I need a Sub...

Oh sure...that makes sense. I'm still feeling good about the REL. If I'm still not happy, I'll just get a good set of full range speakers.

The "total distortion remaining the same" idea from claustrophobic Canadians in the context of REL sub use means nothing. Zero. Does anybody listen to good speakers and say, "wow, if only I could remove the bottom octaves of distorted bad things in my full range-ish mains?" No, they do not. The people who know how to design great speakers make crossovers that take into account the mechanical frequency limitations of the design. The REL dudes know how to make subs, they SOUND great (if set up properly they don't "muddy up" anything), and blend brilliantly with main speakers because that's all they're doing...blending...not truncating or slicing off the low frequencies, but blending in a suplemental way that makes the owners of RELs happier, better adjusted, and somewhat better looking than most Canadians. Most...not all...