Thanks. After the original Stratus model, PSB created the PSB Stratus Bronze, Silver and Gold models. There is a lot of info on the Stratus Golds online and that model gets incredible reviews. There is not much ino online about the original Stratus model but I can tell you that they are superb speakers - very detailed, open and transparent. The clarity of sound is amazing and the bass is excellent as well. The only negative thing (and it is a minor issue) about them that I have found is that the binding posts are actually located on the bottom of each speaker, in the wooden base, and it is a pain to connect speaker wires to them as one has to literally pick up the speakers and place them on their sides in order to access the binding posts. But, other than that minor issue, they are excellent speakers and I am very pleased with the sound and quality of them. I highly recommend them!