I prefer Akiyama Shinichi.
Lelouch no contest, light didn't reach his goal and had one of the most pathetic deaths I have ever seen. DN was good when L was around but it dropped from its grace when Near and Melo tried to imitate L. While CG had two amazing seasons.
So you want me to state which one i prefer without motivating my argument? makes senseWay to spoil it for anyone who hasn't seen it. Try to be a little more careful, u might have just ruined the entire show for some people