need help with a subwoofer

I own a pair of Tyler Acoustic Taylo monitors with a pair of base modules to match. These are not Ref. I's or II's but something that Ty experimented with. The sound is GREAT but I have been looking for a sub to get that very last half octive and was prepared to purchase a Rel Storm III but the local dealer is not customer friendly in this area. I read in one of the mags about the HSU TN1220HO but when investigating on the web, I find a mixed bag of reviews, mostly negative. I want something that will go to 20 with decent output, will be wife friendly, and will not break the bank. Any suggestions?