I am currently playing with the X-Blade RS 300. I have played with Bridgestone rackets off and on for about seven or eight years. Bridgestone sells exclusively in their domestic market in Japan, so unless you are planning a trip there or know someone who is they can be difficult to get.
As far as rackets go, they are high quality, modern Chinese made rackets. I don't think there is anything particularly special or unique about them, but they are pretty rare outside of Japan (and they aren't especially popular in Japan either) and that is why I like playing with them.