Favorite: Kassadin or Zyra (both brutally broken on this map)

Least Favorite: Tryndamere. He literally does nothing during the first 8 minutes of the game (well I guess he can body block.)

Favorite: Jayce/Ashe

Least Favorite: I dont really have one, maybe Udyr.

Fave: Ziggs

Least Fave: Nasus

Favorite: Janna, When you randomly fire a tornado and happen to kill someone, it is the best ****ing feeling in the whole damn world.

Least Favorite: Majority of the melee champions

Favourite - Teemo So easy to win using him.
Least Favourite - Yi.. doesn't need to be explained.

nidalee, teemo and yi ap

Most:
Malzahar

I don't own him, but I really like pushing lanes and dealing a bunch of damage with his Malefic Visions. After an item or two it will completely wipe out a minion wave, and then go on to other people. Also his ult is nice on poorly positioned targets. (His abilities have great scaling!)

Least:
Lee Sin

I bought him because I thought eventually I could learn to play him in SR. I haven't gotten around to it yet, so when I get Lee Sin, I feel blinder than the blind monk himself.

My fav would be either Kassadin or Nasus. Kassadin just does what ever he wants and never gets caught. Nasus is almost immortal. When you hvae some cdr his ult is almost spammable.

My least fav would be Tristana. She is squishy does little damage early and i just can't play with her.

Favorite: Anivia: Since it's just one lane, her AoE can either catch the whole enemy team in it, or make them split up.
Least: Eve: Frigging useless on Proving Grounds. Can't sneak up on anyone and quickly burst them down