i somewhat agree with skip. in a large room, the benefits of going to a 352, 402, 501's or 602 are going to be much more noticible with your sonus fabers. i've had 2 2102's and 2 mc275's on my gradients(which are in a big room), and other than a little more volume, it was pretty much the same. it had a 602 put in, and holy cow...everything got bigger and more defined, especially the deep bass. same results with other speakers as well.