Both are pretty good.
I like ezeral better though

Yes well Wukong is strong and fun to use and Ezreal is also fun to use and also strong with his skill shots and his e like a mini flash.. Well you should really choose it's your choice :P
So which would you guys prefer? An Ap Yi or an Ad Yi?

Neither, I'd rather have a Karma. Or an AFK

Wukong.
He is so much fun.

Learn him, master him. Laugh at your enemies when you fake them out.

Well, my irl friend bought Wukong to semi troll me. :<

I bought ezreal, and I love him. 2 flashes basically. OMGGG. I don't even need a slow, when I have a flash every 5 seconds.

Also, Ezreal has mad jukes :o

'Dat E.

What counters a good nunu top? Dumb consume sustain and blood boild he slows me with ice blast and I can't catch him. I freakin went 0/3 against him with Jayce and I wanna kill myself.

Deplete his hp with ashe/caytlin/vayne from afar.

Ashe is better for slowing him down, vayne and cayt are good for sending him (or yourself, for cayt) backwards and increasing the distance between you.

Or you can use a champ with massive poke damage like Nidalee or Mundo with mana/health regen item first. (depends on who you use) And then upgrade them to eliesia's miracle when you have about 1300.

You'll want someone that can constantly take nunu's snowballs and still be able to farm. It's almost impossible to actually kill nunu in lane, because he is simply too tanky and too fast.

Riven comes to mind, max shield first and simply farm, get brut early if you're still having problems with nunu's snowball, otherwise just rush a BT. Rumble can also work if you manage to survive to lvl 6 without giving up too much of a lead, as his ult + q can do work on any high hp champion.

Otherwise many AP champions are capable of dealing with nunu in lane, it's just that they rarely have the tankiness/escape capabilities that is expected of a top laner. On a special note, Vlad is probably a terrible idea, unless you get babysitting from your jungler.

It's okay to be mad

Not even mad because I set up 4/5 of them for you.