After long hesitation with 5.1 models (companion 5) and 2.1 (companion 3) BOSE I decided to choose the latest computer speaker BOSE 2.0 that came out in summer 2011 and I am delighted. It is true that it lacks a little low compared to 2.1 but frankly the sound is pure, clear and even raising the noise level there is no saturation or sizzling and sound remains the same. In addition the speakers have a very simple design (may be too ordinary?) But that fits perfectly with an imac either at the colors, as the size. The connection is fast, simple and it even has a small wheel (as in 2.1 and 5.1) to adjust or mute the sound. I will say that these speakers are perfect for a small area such as a room 20m2 but more limited for such a large room, or for evenings (it seems normal!) I only regret that there is no remote to adjust the sound of my bed but hey I that of my imac so ...