Summary: One of the best portable speaker systems I've come across. Compact, great design and fantastic sound volume and quality for such small speakers. These really are a great product at a great price.
Summary: Having previously owned the x-mini II I decided to replace it with this, and it's a great improvement. Essentially you get twice the speakers for only about 50% more money The volume is much greater and the sound quality is good. I know some moan about the poor bass but considering these are so small I think it's pretty good - the sound is governed by the laws of physics.
Summary: These are perfect travel speakers! Although small they are ridiculously powerful! Charge via USB very quickly, even whilst using them on your laptop! They are also magnetic so you can attach them to any magnetic surface, or attach them to each other end to end. All-in-all perfect for travelling / chilling in the park. A quick quarter twist reveals the bass element of the speaker, whilst a quarter twist the other way closes them down for portability.
Summary: Fantastic little speakers considering size and price paid. Agree with some others that this isn't going to give you a true hi-fi experience but they do what they are supposed to do very well. They pack up to a very small size which makes them ideal for travelling and can last a long time on a single charge.