I'm very satisfied with purchasing the Audioengine HD3. I chose the HD3 because of the consistent excellent on-line reviews, the compact size to fit on my small desk, and the bluetooth capability. They replaced the Klipsch ProMedia 2.1 that was acting flaky after a dozen years of service. In comparing the sound differences between the two, the Klipsch seem to emphasize the trebles while the HD3's midrange was more upfront. The HD3's bass is satisfying for most music, especially acoustic guitar instrumentals. I only really notice the low bass missing in some of my favorite rock & R&B tracks, so adding the S8 subwoofer might be the next upgrade. One quirk using the USB input that's worth mentioning is the volume fade-up when the audio starts. It doesn't do that using the Bluetooth connection. Also kudos to Shoreline for the very quick delivery.