subwoofer question on SVS and HSU..

I don't have much of a budget to spend on a subwoofer. Maybe $700-
At Tweeter, I found that they discontinued the
Mirage OM200 -- Price $650.00 Any ideas on this Sub?
Beyond that, SVS PC+ and Hsu VTF-3MKII ... close enough to the price range,although large and unattractive.
Will any of these be better or worse with my Paradigm 60's?

Thanks