Bit waffly but in a nutshell is it worth shelling out a what seems a lot for a sub to integrate into an "OK" system? I think I need a sub. I think the SVS PC+2039 would be a lot of fun. But would I be mad to spend £800 on it given the rest of what I own, which is a bit old (that doesn't bother me) but also quite cheap compared to the SVS given that the rest of the gear will produce 95% of the sound I hear? My Yamaha AX1 amp was once a flagship at £2,000, I got it new for £1,000 some time ago. It is "bi-wired" (speakers A + B) to B+W 603 S2's that were £600 when I bought them, centre is a B+W CC6 which I think was £150 down from £199 and surrounds are Canon S-20's (?) £99 down from £199. My sources are a £80 Wharfedale DVD player (one day to become a quality unit such as a Denon 2900 or Arcam 78 etc.), a Technics CD player I found in my attic, at least that has a digital output, and Nexgen freeview (digital sound). I think the bass is pretty good from the big B+W's and the amp is about 110W, so I think well what's the point in a £200 sub-woofer or something that looks quite small like a Q150, is it really going to pay for itself in terms of extra smiles etc? So I look for the best, find SVS, and then think, hang on, I would spend more on my sub than my mains, is that not totally overboard and mad? Thing is, I can understand the grins people describe from hearing theirs, I like D'n'B and metal as well as action movies and I can almost feel myself grinning as my lungs vibrate and the room around me rattles as the tiger tank rolls in or DJ Hype raises his trigger finger etc. Option 3 is a PCi25-31 or other £400-ish sub I suppose. I also really want a £2k M&K but only because the logo is so cool.