As others have said are you looking to pvp, pve or both. In pve there really isn't all that much difference, so it is really down to your preference. Pvp is a whole other story, on paper madness looks good and it gives you some ridiculous number on the scoreboard due to dot spreading, but know this, burst is king in pvp. In my opinion Lightning is better for pvp, but I am sure there is going to be people that disagree with this.