Best subwoofer?

I have owned dual decents, many velodynes, HSU ,JM labs many many others and by far the best bass you can get is not with the compramised sub woofer designs but from a true bass system. Subwoofers are flawed in design from the start, you need massive power, large excursion drivers, subs need room and boundery reinforcement to produce deep bass. A bass system uses low excursion drivers can run on low power isnt effect much by the room. These designs can be horn loaded, BR, TL or even OB its only weakness is size and costs. But with what decents cost or REL. You could get real lifelike bass large excursion drivers cant reveil these small details like low excursion can, the details are lost to the massive forward backward movements these sub drivers produce.Why so many folks with great loudspeakers find subs to be very hard to integrate.Toss in room nulls and peaks that one must work with when subs are used its amazing to me that anyone can enjoy such sound. But as always YMMV

if you need a sub for a stereo system, the only one I have listened to which is fast enough to integrate with a <=9" woofer is the Wilson Benesch Torus

I have 2 Rel Stadium III's, they sound great with HT, one front & one rear. I use them for LFE input only. I too use a Meridian G68/598 for my HT.
I purchased an Aereal Acoustics SW12 because I wanted more flexability, like high & low pass filters & an EQ for my 2 channel analog setup. It intergrated flawlessly with my front speakers. I will try it with my HT later after I get a second one.

Any REL sub!

SVS The very best for the money! SVS subs blow away any sub costing three times as much!