I am a millennial who likes the Corolla's colour
. I'm also a rare millennial who owns a station wagon though.
I think you can't go wrong with either choice. I'd definitely end up with the Corolla between the two, the civic hatch is huge!
Fuel economy difference is significant too IMO.
I think the Fit is a better choice than Civic hatch overall. More practical at least. And it doesn't sound like civic is significantly quieter.
I'd have given the corolla a hard look if it was available when I bought. But AWD and quietness would likely have won out.