Hi, I currently have an XXLS400 which i've been very happy with, but I have a touch of upgrade-itis and so am wondering about a new sub and the SVS PB-4000 ticks all the boxes, apart from, it is a few CM too long/deep. The width and height are fine, but it's going to stick out like a sore thumb in our not too big living room (3.5m x 4m + bay window of 75cm x 80cm), 2.4m ceilings and two door openings. I had a few problems positioning the XXLS400 when I first got it, there's some real dead spots in this room which result in not being able to hear much bass at all when in the room sat down, but when you leave the room, the upstairs of the house would be getting it all. Anyway, I finally found a spot for it and it sounds pretty good, but I've always felt it lacks a bit of slam for music and low end for movies, which is why i started looking for something else. So, the PB-4000, does it play nicely if it is side on to the room with the driver facing inwards towards the left side of the centre speaker? That's about the only way my room could accomodate it (side on), but there are a few choices of position for it like that. Would the same dead spots be in the same place for a different sub? Sorry if that's a silly question, but I'm just trying to get as much info as possible before I start! Finally, where would be the best place to get a good deal on the PB-4000, looking to buy in just under a month's time? Also open to other ideas if you think my idea is terrible or massive overkill for my room etc! The rest of the system is: B&W 685 S2 B&W HTM62 S2 Yamaha RX-A1050 Synology Nas Thanks muchly.