As long as it keeps up with your mains and sounds good then it's a good match. Are there better subs out there? Sure. But the Sub-12 is a great value and a very good sub.
A Harmony 880 remote runs a............. Pioneer Elite 150FD display. Anthem D2 pre-pro. 4 QSC PLX 1104 amps. Pioneer BDP-94 HD Blueray player. Toshiba XA2 HDDVD player. IB sub with 4 Ascendant Audio 18" drivers powered by a Behringer EP-2500. 2 Klipsch Dean G'd RF-7's, 1 Dean G'd RC-7, 2 RS-7's and 2 RB-35's. All protected by a Furman Elite 20-PFi