Subwoofer that can blend with Wilson Sophias?

Hi there. I just scored a pair of Wilson Sophias and am looking for a sub(s) to mate with them.

I have access to a pair of Entec LF-20's but am unsure of the longterm reliability and due to the servo when the amps go THEY GO.

Still they would be inexpensive but I am unsure of the level of output they can deliver.

I want a sub(s) that can be exceptionally musical with the sophias but also pound pretty good when called to.

I have changed my views on my HI-FI. One great system that plays loud enough. and I am going to put together a Infinity Kappa and Adcom system for rocking the house.

So extreme output isnt neccessary but I would like to blast it pretty good here and there.