So I have a set of the Klipsch Promedia 2.1's now and I want to get a second set of 2.1's to use as rears for a 4.1 setup. I'm looking for speakers that can keep up with the Klipschs but I don't have the money for another set of promedia's. I was looking at the Logitc Z3's but was wonderingif anyone has suggestions.