Room Assistance Sub woofer

I'm building my system slowly and trying to pay attention to value and looks (need to high wife acceptance factor).

Looking for a sub to fit a ~20'X15' hardfloor, hardwalls/windows, high ceiling room with a focus on music over home theatre booms. Currently have Paradigm Millinia 300's for the record player.

Anyone have suggestions for subs below about $800 new or used?

possibilities:
Hsu VTF2MK3 (VTF3 is too big)
REL T2

comments on these, my situation or others?
comments on these or others?