Hearthpwn

I think I'd go with Warlock, cause Lord Jaraxxus, Mal'Ganis, and Wilfred Fizzlebang are really awesome legendaries. Warrior is second because Grommash Hellscream, Iron Juggernaut, and Varian Wrynn are great, too. Hunter comes in third...

Iron Juggernaut and Wilfred Fizzlebang are not good legendaries. They don't fit in any current deck that can exploit it's abilities to be really competitive, although Wilfred Fizzlebang needs more testing maybe...

P.D.: Hunter legendaries in third position? They are bad or average at best, and they are not used in any current viable deck out there...

Shaman get's my vote with warrior a close second, I'd rather Mist than Juggernaut. Hunter third.. really? hunter is close to bottom for me.

Quote from Sherman1986 jump

Iron Juggernaut and Wilfred Fizzlebang are not good legendaries... They don't fit in any current deck that can exploit it's abilities to be really competitive, although Wilfred Fizzlebang needs more testing maybe...

Ok, they may not be good right now. But come on, if they find a deck they can be used in they can be the most powerful legendaries in their classes. Maybe not the juggernaut, though. It CAN be a pyroblast for 4 less mana, while putting a 6/5 mech on the board, but that usually doesn't happen. But hey, if your opponent is under 10 health and a mine is in their deck, they will be really scared of card draw, which WILL give you an advantage. 

Quote from iNvex jump

Shaman get's my vote with warrior a close second, I'd rather Mist than Juggernaut. Hunter third.. really? hunter is close to bottom for me.

The 2 new ones are crap, but King Krush and Gahz'rilla are incredible! Krush is the ultimate charge and a real game changer. Gahzrilla already has OP stats for the cost, avoids BGH, and has a legit ability. Maybe not 3rd, now that I think about it. Probably Shaman 3rd...

I'd say Mage and Priest Have the best ones. Rhonin and Antoinidas are both really insane and the priest ones are all viable too. 

Mage or warlock. Yeah, each of them has one garbage legendary, but the good ones are really good. Archmage Antonidas might be the single best class legendary and is played in basically every mage deck. Lord Jaraxxus and Mal'Ganis are both extremely strong.

Priest and shaman get honorable mentions because all six of their class legendaries are actually playable, but most of them are kind of niche cards and none is as good as the three listed above (Al'Akir the Windlord might be close).

Dishonorable mention to hunter for having the most legendaries of any class, yet the fewest playable ones.

Quote from sethdasloth jump

I think I'd go with Warlock, cause Lord Jaraxxus, Mal'Ganis, and Wilfred Fizzlebang are really awesome legendaries. Warrior is second because Grommash Hellscream, Iron Juggernaut, and Varian Wrynn are great, too. Hunter comes in third...

Fully agree with the first two, totally disagree with Hunter. Those legendaries are all not suitable for any currently competitive Hunter archeteype and mostly see play via Webspinner.

Actually, I think Mage comes third with Archmage Antonidas and Rhonin. Two out of three ain't bad ... :-)

It'd have to be warlock

Has to be Warlock. Lord Jaraxxas fills a very unique roll.

I wound have to put Mage in second just cause of Tony. He has won me so many games single handed. Ya, Flame Leviatian is the worst, but Rhonin is decent. So, all in all, mage is second for me.

I'd put Warrior in third for sure, and accept a tie for second I guess. Hellscream has finished me off and acted as a finisher quite a few times.

After that, only Tirion really stands out, but the other two Pally legendaries are pretty "meh." Haven't tested Edric, but, from what I hear and looking at decklists... no.

Warlock, mage, and paladin if you forget Bolvar is a thing :^)

warlock and priest.