I need some decent PC speakers which don't take up too much space. Any thoughts on good ones? I currently have Mercury MS-440 but can't find these ancient ones online to find out what power they are. They are about 10" tall and 5" wide, have 3D surround, tone, volume and power buttons. They are connected to each other, the PC and have a plug. I think they are quite good? I'd like to get some that are as good sound-wise but not as clumpy! THANKS