Im in the middle of upgrading my home theater, and the norh's have very much caught my eye. I was looking to spend $1000 or less, and the 5.1 deal sounded great. You can get a pair of 5.1's, a pair of 4.0's, and a 4.0 for the center channel. All this for $950. Now is would this be worth the upgrade cost over the 4.0 set? Its only a extra $100 but i need money to upgrade my television also. Also, my reciever is a yamaha rx-v992. It was high end three years ago, but will these speakers reveal its age? Will i find myself wanting to upgrade shortly? I listen to music just as much as i watch movies. Im upgrading from a jbl-s center channel and s-38's as my mains, no rears at the moment. Any insight would be apreciated.