I live in a relatively small Manhattan apartment. I need a subwoofer to compliment a Sony mini system. My mini system is just like the Sony MHC-ZX70DVD (I don't know the model number off hand). Anyway, it has DTS, Dolby Digital, etc. It has 2 bookshelf speakers (getting 100 watts each) and 3 surround sound speakers (getting 25-50 watts each). I know that it sucks, but it's only temporary (hopefully!). I just bought the Yamaha YST-SW015 (8-Inch - 70 watts RMS). I'm not sure if I like it though. I got it for $85. Then, I saw the Velodyne VX 10 (10 inch - 100 watts) for $150. I'm wondering if I should "trade-up." I definitely don't want to spend more than $150. (This is just a temporary fix). 1. Does anyone think that there will be a significant difference? I listened to both of them in the store under less than optimal conditions, and I thought the Velodyne was a bit boomy. But, as stated, this may have been a result of the conditions. 2. Also, since the Yamaha is brand new, will it sound much better when it is broken in? Also, I ran out of audio cable, and I've been using a S-video cable (believe it or not). 3. Will changing this make much of a difference (I used an audio cable at first and didn't hear much of a difference with the s-video cable (I'm using the s-video cable b/c it's longer)). 4. If I need a new cable, do I need a subwoofer cable, or will regular radio shack speaker wire work? Keep in mind that the room in which this will be used is about 12ft by 12ft or so. It's being used for 80% movies and 20% music. (36" Panasonic flat tube HDTV ready). Thanks for your help.