Even though I am an SVS sub owner I still recommend Axiom subwoofers, the ones I have heard and know they work well. For some cost is not an issue or they want all their speakers to match aesthetically, for this reason alone Axiom needs to be in the sub market to ensure sales to certain individuals.
I really enjoy the way Axiom's subwoofers sound, but for me the extra cost was the main reason I went elsewhere.