I have a system consists of: Yamaha RXV-650 Sony DVD NS-305 Wharfedale Diamond8.4 fronts Wharfedale Diamond8center i want to buy surround speakers so i want to know what do u think, it will be very difficult to attach the speakers to the wall,but what do u think gonna give me better results?? Getting diamond 8.1 & put them on stands or on the wall if possible?? get Diamond 8.3 & put them on stands & that well make them with the stands 120CM from the ground or get the Diamond DFS & put them on the rear wall if i can?? & does the diamond DFS make great difference in surround sound than the direct speakers??? I maybe attaching them on the walls on the sides not behind me,so how this gonna affect bi-poles & direct speakers?? I only want Wharfedale Diamond8 speakers to complete the family of the speakers.