Update
Hi everyone,
My speakers arrived on Saturday! All I can say is, 'Wow!'
My limited experience: a few crappy HTiBs, then I 'upgraded' to Mirage OMD-5s for the front, OS3-CC for the center, nanosats for the surrounds, and a Mirage sub (10"), powered by a Yamaha HTR-5063. I was happy with the OMD-5s for movies, but they left much to be desired for music.
Enter the SVS MBS-02. Listening to my iPod via the Yamaha dock in Direct mode, I was blown away. No need for a sub, at least not the one I've got. I don't know much, so my words won't hold much power, but I'm a very happy customer. Now I've just got to upgrade the sub and receiver...