Which is the best minecraft version ?

1.8 is for me the best because thats when I started playing and enjoying the game. Its brings back so many memories from the first day I joined a minecraft server with my friends. 1.9 would be the best option for a server right now though. Since most plugins have 1.9 support and many people play 1.9 its pretty much the best option. (Using a plugin called Viaversion you can also have 1.10, 1.11 and 1.12 players join the server.