I have a PB10 as my first sub and am happy with it. Paid $480 from SVS direct. It makes a noticable difference in music (I love drum solos), but especially in HT. It's also my end table even though it's front firing. It does not look that bad in my living room (pictures to come later).

M60 + QS8 + SVS PB10 + Yamaha HTR-5640 + Pioneer 578a