As long as you have a well built sub (both the JL and Velo are), then the sound that you end up with is 90% setup related. Whether it sounds tight, fast, authoritative, etc, has to do with your room's acoustics, and how well the sub works within the variables that the room throws at it.
Integrating a sub takes some work, but is worth the effort of course. The Velodyne SMS-1 recommendation is a good one if you go with the JL.
Consider a REL B1 as well.
Integrating a sub takes some work, but is worth the effort of course. The Velodyne SMS-1 recommendation is a good one if you go with the JL.
Consider a REL B1 as well.