Electric Upright Bass Database

I am searching for informations about the Yamaha Silent Bass from a owner and a player of the instrument who is not influenced by Yamaha´s or other´s promotion. I mean: "It sounds not better or worse than other expensive EUB´s (for example: Vektor, Fichter, Zeta) but its ergomimic playcomfort is mutch better while playing the silent bass and changing it together with an acoustic double bass in one concert." (And I like it´s design) If there is someone who can give me informations, please e - mail me Roland-