Took a bit of a gamble on these after being very disappointed by the look and feel of the Sony and Panasonic low end surround sound system speakers.
Very glad I did go for them, got a very good price from Amazon direct on a black set of these (generally only the silver version seems to be offered cheaply now) and I'm very impressed with the build quality and sound from this kit. I bought a second hand Cambridge Audio dolby digital amp from a friend who was upgrading and I've transformed my DVD, Bluray and XBox360 experiences.
The sub seems a particularly good piece of kit (I like the auto on/standby feature based on input signal) with a very weighty punch, but the other speakers are pretty good too, all hefty units despite their small size and their size and shape make them quite discreet compared to some of the frankly ugly offerings from Sony etc.
I can't fault them really, particularly for the price, I think you'd be hard pushed to get a noticeably better sound for much under twice the price of these. In a reasonably large lounge (4x6m) they are more than adequate at filling the room with sound and I've yet to need the sub up higher than half way. Very happy with my purchase.