Sub suggestions

I have Tyler Taylo Mini Ref speakers with a NAD 320bee int. amp. The speakers are front ported. The room is 10x13 I would like a sub of modest expense that would pair up nicely. Any suggestions?

There is a review that looks interesting at Enjoy the Music of the Tekton subwoofer ($650), but I have not heard it myself. I have heard an Outlaw sub and thought it was pretty good. I would insist on a home-trial before committing, since you never know how well a sub will blend with your mains and work in your room.
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Omega Cube or Deephemp Sub. Perfect for music in a small room.