After reading the review of the new Aerials in the new SGHT (or was it Home Theater?), I had a thought. This was a VERY expensive (at least for me) speaker package, and the reviewer recommended 2 subs. At around $4000 a pop, this adds substantial cost onto the package. Theoretically, if I were ever to invest this much into a set of speakers, would it be sonically advisable to go with the "recommended" sub or at least a sub from the same manufacturer? Or would an excellent, lesser-priced sub similar in performance (i.e. SVS) suffice? Just curious if sound continuity would be affected. Thanks.