Crush Bandicoot wrote:
I've been looking into fast melee heroes, what do you guys think of Xin, Jax or maybe a melee assassin like Akali or Fiddlesticks.
Akali is an interesting hero, to say the least. Huge damage output, amazing chasing ability, and a kind of "personal brush" stealth mechanic that often tends to be the only thing saving you from your own nonexistent survivability. If you get kills early enough, you can carry before the enemy's DPS becomes a threat and completely dominate the game by being impossible to escape from and deadly enough to kill whoever you want. The energy mechanic is almost negligible since Akali's abilities almost never leave you without enough energy to do what you want.
Of course, assuming you don't carry that much, you'll still be quite dangerous to the enemy's own weak DPS classes. The only problem is that in a 5v5 fight, you need your team to create enough chaos that you won't be targetted and killed, as you will be within range of the entire enemy team and most likely one of the weakest heroes in the fight. Wait for the right opportunity, dash to someone, drop a stealth cloud, kill them, and hide before anyone can stop you. Repeat as soon as they realize that your team is a big enough threat that they can't waste time waiting for you to come out of stealth.
I can't tell you much about the other two you mentioned, but Jax is much worse at chasing than Akali, and he's got a lot more survivability to work with. If you don't think you can play like an actual ninja, you might consider trying him out instead, as he's a lot less sneaky about killing things.