Hearthpwn

I almost chose rogue but went with warrior instead. I like it more than Deathwing and the standard portrait is better but only in golden (which I don't have yet). I play warrior more recently so it was a decent compromise.
Demon hunter portrait is excellent but I have a hard time enjoying the class so that's my next portrait.
Rogue is good but not AMAZING.
Hunter is for sure my third pickup because I love the class (but Sylvanas is the best hunter skin, undisputed) and this is the best Rexxar portrait for sure.
Paladin best skin is Sir Annoy-O because every emote is a BM even if you don't want it to be.
Warlock best skin is N'Zoth.
Shaman level 50 is bad, priest level 50 is bad.
Mage level 50 is boring. Kirin Tor Jaina is the best (but only because they didn't make her DK art from Frozen Throne an option)
Druid level 50 is super bad.

/opinion

I really like the animation for Garrosh, it’s subtle but he is breathing very heavy. 

Yes! I think some of the more active animations can betray the look they try to go for and this one is great, really menacing.

Quote from Livtraser >>

If you want a paladin portrait, you can get Lady Liadrin, just by installing WoW and get to lvl 20, the game is free to play to a certain level (or perhaps its a trial or something like that), I did it some time ago. At lvl 50 I chose Garosh because I didn't have any Warrior skin, and tbh I don't really like any of the lvl 50 Portrait except the Rogue, but I have Maiev and I think she looks better.

 Oh, well, I do have Lady Liadrin. I had her for quite some time now but I am also not feeling her too much as my preferred option either. I have to check if I have any others. I know I don't have Sir Annoy-O but, even if I did, that would succeed in annoying even me.

Not to mention I basically got my preferred options for basically every other class except for Rogue and Paladin and I am fine with Maiev as my Rogue option. I am sure I will get Valeera next set though.

Went Demon Hunter.

Druid and DH are the only two classes I don't have premium heroes for and Malfurion is the next book of heroes so I figured I'd go DH.

Bit of a shame though because Rogue and Warlock are easily the best two portraits there.

Anduin

He actually looks pretty legit in game as to opposed to first glance.

Rexxar, Malfurion, Garrosh, and Illidan also aren't too bad it's just tough because either their 1K portraits are better looking or have other cooler looking alternates.

Priest cause I loved Benediction and tier 1 set even tho I dont rly play priest and all his other skins are lame imo!

Mage>Rogue>Paladin for me, but if you're more p2w side, you should probably skip mage since you already have billions of alternative mage skins..

I chose rogue for two reasons: there are so few rogue skins and it is actually a good looking skin. Next time I will choose warrior.

I went with Malfurion because I don't have good Druid skins. I love my Nemsey, Deathwing, Kel, etc. Next will be Rogue for me. Currently at level 98 woot woot. 

Jaina of course. Atleast this version is closer than the 1000win.

I took Warrior, because i have no other Skin for that class. Tbh i don't like this new arts very much, they could have been way better than that

I don't play DH enough to ever reach 1.000 wins. So I picked Demonbane Illidan. In that way I get to play a golden Illidan. 

lvl 49..

Is there any change by 1000 wins? I got over 1000 wins by all classes and wont use any of these, if that is not shown.

I went with Rogue just for the lack of alternate skins.

I picked the hunter portrait, but now I'd go for Garrosh.

I am only at 23 but aiming for Gul'dan

Druid

Shaman main, even though I have so many shaman portraits that new thrall is amazing!

Clicked on the first one on list, then forgot about it