Which champion is better and plays its role better? I play Rengar Jg and that is my main, but im looking for a really nice mid laner and when playing Azir mid I did great and loved his mechanics ( During free rotation) . But when I talk to other players about who to play jg they say Hecarim is the ultimate jungler and I feel that if imma main jungle I need him. So who is it? 
or 
plz leave a vote if your looking at this.
TurquoiseYoshi2 votesHecarim is not a great jungler. I would say Rek'Sai and Sej are better. This is coming from a former Jungle Hec main. If you are going to go Jungle Hec, you should bring Smite/TP for global pressure, as Homeguard/TP is his best strategy.
NaturesMayhem1 votesThank you I would play Rek'Sai but she has been only nerfed over the past few updates.
TurquoiseYoshi1 votesRek'Sai is a jungle god. She is only a jungler, and will only ever be a jungler. She cannot be any other position. So she has to have a lot of jungle power to make up for being full jungle. Sej is a good tank jungler. Her and Amumu are probably the best CC tank junglers.
NaturesMayhem1 votesNever forget top lane she has very good potintial there; well almost every jungler can play top so to say.
TurquoiseYoshi1 votesYeah, but her farming is heavily suited towards jungling.
Viscount Ombre1 votesThis may sound weird, but are you planing to go mid lane at all?
If so, and you really like Azir, then go for him. Currently you have Rengar, as your jungler. If you really desperately need a mid laner then yeah, get Azir if you like his style.
Hecarim, in the jungle in my experience is fun. If you are total trash at the jungle, like I am, he can help you improve and learn on a champ that is a bit more forgiving when taking damage due in part to his W. His clear speed is pretty meh, especially if you are again trash like me. But overall he is pretty good and offers a bit more mobility or rather encourages it with his passive that makes it so that you can increase his AD with move speed. That is the main thing right there, MOVE SPEED.
NaturesMayhem1 votesThank you
NaturesMayhem1 votesIf Hecarim isnt a good champ then who is? A champion with a diffrent feel to it that is also fun and viable.