OK so your advice makes a lot of sense And I really like the Hsu speakers that you recommended, I do find it surprising however that you recommend bookshelf speakers over towers but then again that's why I came to these forums, there are many things I have yet to learn, so what I didn't mention is that I do have a 5.1 system set up already, but just like the Polk audio sub, I didn't make educated purchases, especially back several years ago when I purchased most of this system, The main reason for my upgrade is that my receiver has gone obsolete, it doesn't support HDMI and that has left me in the past when it comes to things like Dolby true HD, The current system I have right now consists of a Harman Kardon AVR 125, A polk CSI- 20 Center channel, 2 Bose direct reflecting 301's as the front channels which are only a year old, and a couple of infinity satellite speakers as the surrounds, it's an OK sounding system but I think I could do way better by applying some research unlike I did when purchasing this system, by upgrading to the HSU system that you recommended how much of an upgrade do you think I would be getting and what's your opinion on the system that I have now, I really want something that sounds great and I am willing to work toward it, thanks for your replies