I am in the market to buy my home theater system. I have my speakers allredy and now looking for the system to power it. Is it better to buy an integrated system? I have a jvc now but it is only pro logic and I want to upgrade to digital surround sound. I have seen the Harmon Kardon ,Sony,Yamaha, and Marantz. Can't figure which is best. Any problems with any of these that you experts know of? Any info would be much appreciated. Thanks,newbie to this new age of surround sound.