Subwoofers?

Well said, Snickelfritz! That was almost poetic. :)

As someone very knowledgeable once told me... "Bass is slow ... It is the high frequencies that provide the illusion of speed."

There are many factors that can affect bass performance and before ditching the Paradigm you might try optimizing its performance by fiddling with its location in the room, crossover frequency, and phase control. I got my Servo-15 to mate seamlessly with InnerSound Eros electrostatics (which are very fast speakers), so something may be wrong with your set up. Bass is extremely room-dependent and simply buying a more expensive sub may not solve your problem...

Theo, rotating the sub can have a profound effect since the enclosure is around 22" long. In fact, in my system, I had the sub facing the wall (at mid-wall) and I had a standing wave that just wouldn't be tamed. But I rotated the sub so that the woofer faced out into the room, which effectively brought the driver another 22" away from the wall and now that big peak has been largely tamed. And facing it to the side instead of straight ahead has a large effect too, so you may have a couple of options left before you think about moving to a more expensive sub. I think it also helped mine when I put it up on 3 BDR cones, and by all means use that level control too.

The RELs have been getting great press, but even the RELs are subject to the same laws of physics that ultimately determine the performance of any and all subwoofers in a given room. So my advice stands.

That said, if you are very limited as to where the sub can be placed it may not be possible to achieve good results in your room with any subwoofer. Try the positioning and let me know if that works for you.