Difficult to say. I don't know the uniforms from their beginnings but as Passpo mostly used the same basic design, at least until 2015, my favourites were the ones the used on Check In abum, Next Flight or Step&Go. Bright colours combined with an stewardess dress (small resemblance). It fits the recent musical style the most imo.
Currently I like Annya's design but I wouldn't like to see it on every member.
If I had something to say, I would prefer something in the way of the Natsuzora Hanabi MV. Punkish clothes, more fitting to their musical style (back then).
But in general: As long as the music is good (and the girls nice to me

) I can't be bothered by something like uniforms
