Room setup: 12.5' D x 42' L x 9' H. There is also another 8' x 3' hallway at the opposite end of the living room. That includes kitchen, dining area and living room. Living room is approx 12.5 x 16 of that space. \n\nCurrent Modest System: Onkyo TX-NR636 receiver, Definitive Tech ProCenter 1000, Definitive Tech ProMonitor Front L&R, Rear L&R, Front Upper L&R. Definitive ProSub 800 just died.\n\nCurrent Usage: 95% TV\/Movies\/Game System\n\n\nSo, with thought of future room upgrades (if\/when we buy a different house down the road), I'd like to get a sub that both blends now, and can still fit if I have a different room with better L\/C\/R front speakers and equipment. Also with an eye towards shifting back to a higher percentage of music listening too down the road.\n\nPrior sub location was in the rear right corner. New sub will not fit there, so it will be on the rear left side of seating, which is the open wall side to the rest of room.\n\nI'm considering and debating amongst:\nRythmik LVX12 or FVX12\nHSU VTF-2 MK5\n\nI'm getting some feedback saying i should skip all and get an HSU VTF-3 MK5, but it seems like it might be overkill and it's even larger than the other 3 I'm looking at. I had a thread going on AVS forum and just saw they are down for 3 days for an upgrade or something. Any thoughts? Thank you.