Yup, I did the Toyo's and the Hoosiers on back to back weekends at Mid Ohio. With the Toyo's the weather was sunny and around 80-85 degrees at race time. With the Hoosiers the weather was sunny and around 90-95 degrees at race time. The Toyo's were able to do a 1:45.26 during Sunday morning. The Hoosier's did a 1:44.80 on Sunday morning. In the heat of the afternoon, both of the tires seemed to fall off about half a second from those fast morning times. But no matter what the conditions, it seemed like the Hoosier was consistently about half a second faster than the Toyo's.
Both tires held up to whatever I was throwing at them pretty well as the hot races went on. I suppose the wierdest thing is that I swore I was destroying the front left on the Toyo's with how it fealt but then was surprised to find that it was wearing pretty similar to the left rear. Seriously, they wear like rocks. Hoosiers wore well, but after a race you could tell which tires were on the front.
One thing I was pleasantly surprised to find was that my setups really weren't that different from one tire to another. During the Toyo weekend I had to change my set up quite a bit to get them to work at all. Then for the Hoosiers, I set everything back to my old "Mid Ohio on Hoosiers settings". By the end of that weekend, I had adjusted damn near everything back to where I ended up at the end of the previous weekend. I attribute that to just the vast difference in the grip and feel at Mid Ohio versus the old pavement.
Another thing, when the car was further away from its "sweet spot" with the setup, the Hoosiers were MUCH more forgiving. If the Toyo's didn't have the car spot on, they were absolutely horrible. The Hoosiers didn't complain or fall off quite as much with a less than perfect setup.