Nope, I don't know of any comparisons like that.
The Azenis doesn't get grippier as it wears down from full tread, but it doesn't get worse. The SO3 has a dual compound setup IIRC thats why it seems to get more grippy as it wears. The real ticket if you don't get much rain is to buy them shaved (if you can find them). New shaved Azenis or SO3s will kick the **** out of full tread ones.
I still maintain that the Azenis is equal in performance to the SO3 at all stages of its life and it can be had for a LOT less money!
I'll update everybody on the ES100s when I get them. They should be here any day.
I'm going to be spoiled when I do get them tho, because that means that I'll be running Hoosiers on my 15" wheels. One of the perks of working for a race team is that you get all the used take-offs that you want. Nothing like a free set of race tires with 5 laps. >

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