Sony is well known the world around in the electronics world, and they have a pretty decent following in the car audio realm as well. The build a good product for a good price and are readily available almost anywhere you live, this accessibility combined with good build quality puts them fourth on my list.
The midwoofer for the XS-D series is a vacuum formed polypropylene cone, which was a process pioneered years ago and applied to midwoofers and woofers alike. The process results in a rigid and light cone but has a tendency to color the sound slightly. This is sometimes an acquired taste but certainly good sound. If fact some people who have grown up listening to this type of design actually prefer the sound versus a more esoteric “non-color” more expensive sound.
Sony uses a soft dome tweeter that has been an industry standard for several decades, so it is both a good sound and easy to listen to by nature.
