Hi Guys, Here is my two pence on two highly acclaimed 2,1 system PC audio system. I own both of them. Music is subjective but I would be very happy if this review helps anyone who wants to buy a great entry level 2.1 system. Swans M50W: Primarily for people who love listening to music. 3" Mid-bass drivers 20mm aluminum dome tweeter 6.5" subwoofer driver Logitech Z623 Primarily aimed at gamers and movie lovers. 7" subwoofer driver Satellite speakers without any tweeter THX certified Sound signature: Swans M50W The default sound signature of Swans is neutral / flat. However, if you do not like a flat frequency response, you can simply tune the equalizer to your taste. Swans respond brilliantly to slightest change in settings. I have boosted the bass and the treble a bit for a more fun sound signature. With this setting, the lows are deep and punchy (they indeed go pretty low), the mids are very decent, and the highs are very good.The subwoofer is really powerful and the low end does not bleed into other frequencies. The bass is well defined. Clarity is good and the sound is basically warm / smooth. These babies do benefit from a decent sound card. Overall, a very musical 2.1 system. Logitech Z623 Almighty bass. Yes, that's the way to describe it. It's incredible how the 7'' subwoofer out does itself. The bass strikes like a hammer and you can feel it 20 feet away. But that is basically the only brilliant thing about Z623. The mids are acceptable. The sound is bright and clarity is decent, Highs are rolled off. The sound signature is so much twisted that the composer would hardly recognise his own creation. Does it sound fun? It's pretty much a hit or miss. If you listen to just bass heavy genre's, this set up would be fine. If you listen to all kinds of music or genres where vocals matter, Z623 would have serious limitations. Movies will sound good, games will sound fantastic. Z623 has a headphone jack too (an awful one). I have no idea how THX sets their benchmark, but to me this one is a tricky deal: you may find this the very best (depending on you preference) at this price point, or very unrefined. The Logitech one looks slick. Swans has a more classy look with a wooden finish. If you own any of the above, please do share your opinion on them.