I've used Gentoo for approximately the last year and it's great but I kinda just got tired of compile times and draining my laptop battery. Switched to PopOS and have been quite happy so far, although I still run Gentoo on my desktop. Happy compiling!
But unless you are a nerd, Arch and Void will do most of what Gentoo will do, but without the compile times.
It is really customizable since you are building and compiling everything up from a small, bootable base. Arch and Void will do this too, with the only exception that compiling everything from source can give a slight performance advantage if you maximize your compiling flags for your exact processor. But you can still similarly compile arch and void packages from source with their package build system if you want that 0.00001% performance advantage. Otherwise, Gentoo is just a flex for showing you can compile things.