Well I actually borrowed a Cambridge Audio X200 from a local store for the afternoon and just testing with music I didn't notice any more faster punch or umph compared to my B&W AS1 which, according to a couple of people I've spoken to, is apparently the worst subwoofer in the world and possibly designed by Hitler himself.
I'm only testing on a normal level as I dont want to try and rearrange my furniture by bass alone so I'm kind of stuck. Is there any mainstream subwoofer you can compare the xls200 to so I can see if I can arrange a loan to get an idea. I'm tinkering with the system to try and get a warmer sound and sharmer, faster bassline to music but I could just be going the wrong path.
Cheers,
Franklioni