I've played Vayne a total of 8 games and I'll tell you this: She's fun as hell, but unfair. I've lost half my games as her, BUT have only broke even or gone negative in KD in 2. Lost one because Karma pokes hard as hell. But in all, she is pretty broken. hit 2 autos, roll, hit a 3rd and chunk em for a bonus 100 at level 2, more or less. god forbid they go near a wall. auto, roll, auto, e, proceed to get free autos. roll occasionally to avoid any other enemies and get more damage. I've played yasuo a great deal more. I suck ass as him. I see his weakness, but his strengths, goddamn it's retarded how much they shine. dueling with him as easy. however, im not used to melee champs that dont have many forms of escape, or health for that matter, so i got caught out way too many times. but fuckitall if he catches you out. 50% more damage than a sated yi, all from autos. yi cant meditate because not only does yasuo hit for more than it heals, he has a knock up that disrupts it. I've tried many of the champions I say are bullcrap, and i stand by 80% of my claims.