Hi Need some advice! I purchased B&W 705 as music/front speakers, Denon 3805 Amp and Nordost speaker cables. I'm now looking to add a sub.. Working on a 5.1 setup . I initially looked at the B&W PV1 but was not to impressed.. have been listening to Rel q150 and Rel Quake and in my opinion they are better subs then PV1. According to the guy in the store there is no big difference besides that the q 150 can handle larger rooms... I have a limited space for the sub, rest of my family (wife) does no like big boxes in the living room.. I really need some advice..