Just a heads up from a seasoned A/V guy. HTIB subs are usually pretty weak. Usually 6 1/2"- 8" drivers with small amps and poor construction. Bad port design and are usually boomy.
SVS and HSU are your top of the line powered HT subs, but are pricey. A lot of people also like Velodyne and BIC. I run dual 12" Infinity PS212 400 watts RMS subs in my Home Theater set up. I also have 12 ft. ceilings and a lot of open air space to fill up.
The size, power, and placement of a sub depend on the environment it's in. Is it a small enclosed space, like a bedroom. Big living room, Small/Large bedroom, Large basement. Etc...Carpet or Tile/Hardwood can be a factor when considering a forward or downward firing sub.
I use to run a little 75 watt JBL 8" sub in my apt. and due to the tiny living area, it hit hard. After moving into my house with a giant open living area it had zero authority. It literally went poof. And bought 1 PS212 and then another recently. The 2nd wasn't necessary, but I'm a bass head/LFE guy. I like to hear my surrounding neighbors tell me they can tell when I'm watching T2, Cloverfield, or Percy Jackson on Blu-ray. And I get a kick out rattling the dishes in the sink and having to reposition the picture frames in the house after a good LFE flick.
*Dayton makes a very decent low cost powered sub in 8"-10"-12" sizes. Calibrated correctly, they are not boomy. You can get them off partsexpress very very cheap.
If you want something quick and easy. HTIB is the way to go. If you want something closer to a reference audiophile type of system, then building component by component is the way to go. It just depends on how deep your pockets are and what your expectations are. I went with Polks for my L/R/C/SL/SR, Infinity subs for my .1 channel, Onkyo HDMI AVR, Samsung Networking Blu-ray, 50" DLP, Dayton HDMI cables, Monster brand speaker wire, sub interconnect cables, and Y splitter. And everything is plugged in to a big Geek Squad UPS to protect all that investment. And compared to most of the guys on AVSForums, my HT is entry level chump change stuff.
it was not a problem to bring money to his house at 10pm.so why is it a problem to call and bitch.it wasnt a problem when we were all sitting around smoking pot together.yes i said it we all were smoking pot together.what now stupid.