I grew up in the 70s, so we're all biased towards what we were exposed to early on.
My first kit as a kid was the white shirt with 3 black stripes down one side, black shorts and black socks.
For me, it's always going to be red shirt, black shorts and black socks with the red and white trim.
Having said that, my second choice would be red top, white shorts and black socks.
Anything else just doesn't look right to me.
Ps. I would love it if they brought back that white away kit with the 3 black stripes down it.