i got both racket, for me siden is high end racket, sweetspot smaller, shaft quite hard. trivista middle end racket racket, shaft middle if u are advance player shiden is more suitable for you,
i think a bit big bigger then z slash, if u are wrist player, it is very fast racket, but not heavy like vtzf consider as "speed" racket not powerfull racket . if u are not use wrist a lot use arm a lot it is not your cup of tea, my friend just try 2 session then sold it