Newf
I used to think the same - how important could a sub really be, it only fills in the very bottom end of the music range? But then I never owned one till a couple weeks ago and I'd never listened to HT movies with one.

If you are planning on using the sub for much HT movie watching, especially action movies with lots of bang, crash and explosions, get a good sub. The experience is amazing. I'm so happy I got one and am kind of wishing (even for my small room), I'd got a bigger one. I think I'm coming down with a case of upgraditous already. Time will tell.