Promedia 5.1, Logitech, or None of the Above?

[compEngineer0]

I currently have the Klipsch ProMedia 2.1 speaker system and I'm looking at maybe upgrading, but I'm not sure what to get. I'm pretty happy with my ProMedias, and so I'm leaning towards the Promedia 5.1, but reading reviews on www.newegg.com is making me a little iffy and I'm considering the Logitech Z-5500 speaker set. Any opinions on either one or even a different set of speakers I should get? Thanks.

[compEngineer0]

btw, I have purchased the z-5500s and they are great. sound is great and they look better than the klipsh. as far as sound, there is no shortage with this system. the only problem is that the subwoofer is enormous!! it seriously is 15"x13"x13" and is heavy. other than that, a great system!