Hey all, I was just wondering if you guys, girls too can help me pick out a nice set of either 5.1, 6.1, or 7.1 surround speakers. I am going to be using them for an upcoming iMac, and since The computer will be in my room, I want to fill the room with speakers So anyway, I don't really know where to look for good 6.1 or 7.1 surround, but I would also be more likely to go with a set of 5.1's rather than 6.1 or 7.1. I took a look around and probably my most likely candidate's are these: http://www.logitech.com/index.cfm/products/productlist/US/EN,crid=2172,categoryid=422 Either the Z-5450 or the Z-5500 Anyone have any experience with these, or know anything else that is just as good/better? And by the way, I don't want to spend more than $500. Thanks.