Tire questions

When the T/A's first came out I talked to a guy who had them on his Corvette. I asked him if they were any good & he said they were pretty good after you got the tread worn about half way down. Don't know if that still holds true but, even if it does, it's a lousy way to get a good tire on the street. I'd be interested as to what people think of different tires as far as traction/handling, etc. It's getting hard to find anything decent, even in sizes as amall as 15".