I know about not fighting while his abilities are up, and trying to engage on CD. Avoiding Qs, everything.
If I play perfectly in this regard I can break even with him, with CS.
But he can always set the terms of engagement, with 2 dashes, a slow, and infinite sustain and ability usage. He can escape almost any chase attempt or gank (until I guess, you get frozen mallet)
He has everything you could possible need.
I'm guessing there are a few champs that can actually kill an okay Lee Sin? Any advice on who to use?