Hello! I am in the market for a subwoofer for my HT system. What do you think is the best sub for $300 or less? I was thinking SVS PB10 first, but it would be close to $500 out the door. My setup is given below. Room size - 16*20*9 Speakers - Energy C7/C-C1/C-R1 Receiver - Pioneer 509S (to be upgraded, possibly to Pio 101X ,after the sub) Current sub - Yamaha YST-SW105 (8", 100W peak?) Music/Movies breakup - 30/70 Thanks in advance for your recommendations!