I've upgraded most of my gear over the last 9 months to what I have in my signature, finally getting hold of the RX-V1400 a couple of weeks ago from Germany Although I am pretty pleased with the results I think I probably need to upgrade the subwoofer now. I was going to go for the Yamaha YST315 but having read through the posts, especially the budget sub thread, I think there may be something better suited. My room is 4.1m x 3.3m and the concrete floor is carpeted. I have currently shortlisted the MS309 (although I can't find it listed anywhere in black) and BK XLS2000 from the budget test along with MJ Acoustics Reference 100 and Rel Quake. I use the system split roughly 70 (movies)/30 (music) so would still like something that sounds pretty good for music. I want it in black to match the rest of my setup. So am I right in thinking that any of the shortlisted subs will be better than the YST315 I was originally thinking of. Budget is £200-£350. I should be able to demo all of the subs apart from the BK, but would welcome any comments you may be able to give.