In general I think I prefer the tone and timbre of Sky, but the intonation from Jupiter sounds a bit better to my ear, that’s why I voted for Jupiter.
You can hear an example of this here,
From 0:19–0:20 in the Story example.
I’ll need to listen to more samples and play with it a bit myself once it rolls out, but to my ear it didn’t matter how pleasant a voice’s qualities are, if the intonation is off it pulls me out of it.