Finally decided to complete my home theater and I'm having trouble getting a sub. Originally I thought just go for the sony wm40, but lately I've been thinking to get something a little better. I live in an apartment, and the living room is about 15X15, then it opens into another room in the back. So I was thinking I needed something with decent punch, but I won't be able to play anything too loud in an apartment. I want to limit myself to about 250 if possible, but if i think its worth it i will go to 300. I'm looking for any info or adivce, thanks.