Hey guys, Ive been saving a little money so I can upgrade my system further. I have Swan 2.1 & C3 for mains & polk fx300's for rears and a SVS 20-39+ for the low end. I did some measurments on my room last night & the main room is 3000cf with a large opening into another 3000cf or so. Im running a HK 230 receiver & was wondering what you guys would do if you were in my shoes. If my mains & center were larger or seem like hard speakers to drive I would get an amp first but since they are a mid-size bookshelf then im kinda wondering if adding a 150x5 or so amp will make a huge difference. I was also thinking of moving up to a pb12-2+ to pressurize the room a little more. What new toy would you get? and dont say another cylinder because I dont want 2 in my living room.