If you want quality then go for the Klipsch, hands down. The Logitechs are a good speaker system for 100bucks, but compared to some other quality sytems out there they fall very short. There is really no speperation, they have good bass(though I feel its rather distorted) but the highs are lacking and there is almost no mids. Everything is drowned out by the bass.
With the Klipsch every sound is distint. I literally listened to songs I have been listening to for 10years and heard sounds in them I have never heard before. I used to install car audio also, so Ive heard them on some top of the line audio.
Now here is another choice for you, why not look in to the Cambridge 510D's? They are a quality 5.1 system, that are second best only to the Klipsch Promedia 5.1's. If I had 250 to spend and the choice between the 4.1's and the the 510D's even though I utterly dispise anything Creative makes, I think I would have to go for the 510D's.
My advise is to go down somewhere like BestBuy or CompUSA. Take a listen and see what you like the best. To me the Z560's were just over powered by bass, and it was not clean bass. To me quality is alot more important than quantity. Although I would have to say my 5.1's can rivial just about anything in bass. But the sub on the 5.1 and 4.1 are different and I think the Z560's edge out the 4.1's in bass, and bass only.
