The answer is and Ender IO . The modern versions have beautiful new blocks, but they lost the mechanical soul that 1.12.2 perfected. Mods like Chisel & Bits , Quark , and Actually Additions have never felt as responsive as they do on this version.
Getting started is significantly easier than a traditional installation: eaglecraft 1.12.2
If you ask, "Why not 1.16 or 1.20?"