Using Gentoo stable in production right now. I'm in charge of how long a package is supported now. All execs get a brand new gentoo machine built with binaries compiled by myself.

You wouldn't believe how fast you can get a gentoo machine up and running compared to other distros. Build for a minimum common architechture (all intel binaries are based on Sandy Bridge, all ARM based on Rockchip RK3088), and installing for new computer is little more than untarring a bunch of binaries to /. My record is 5 minutes for a full KDE Plasma 5.5 software stack.