i think they all have their own take on the wu sound. 4th doesn't sound nothing like RZA production to me. to be honest i'd have to say hes my least favorite out of the bunch.
they all kind of learnt from rza so obviously you hear that influence a little in their music but they each got their own thing. true master should be one of the biggest names in hip hop, i mean it probably sounds like stan talk on this forum but i think its true. only reason he didn't get big is being in rzas shadow. any news on true master? is he in jail yet?