Driving from Salt Lake to KC: take the 80 or the 70?

[TinyEvel]

Hey kids.

I'm driving from Northern California to KC next week. I figure going through Northern Nevada to Salt Lake is the only real way to get halfway there, but from Salt lake, the map says it takes about the same time to go via the 80 through southern WY and then Nebraska, or turn south toward Denver and go the 70 through Kansas.

Have any of you done one or both of these routes? Which is better?

thanks

TE