I think I've decided on getting a Klipsch 2.1 speaker system because they seem to be getting the best user reviews. What I'm stumped on is what the difference is between the ProMedia 2.1 and GMX A-2.1 models. Is there a difference in quality? Is one preferred over the other? Naturally, I am inclined to buy the newer model, the GMX A-2.1, but I'm not sure if there's a difference between the two since a lot of you have actually suggested the ProMedia model.