I have GS-D3's on my Firechicken in the size you mentioned and I love them. I have autocrossed in the rain on them and they were fine. I have been on the turnpike in heavy rain at 70+ and they were fine. I don't autocross on them in dry conditions, I have Kuhmo V710's for that. In dry conditions they are a great tire as well with plenty of lateral grip.
I have a set of Toyo RA1's (predecessor to the R888's I think) which is a good tire also, but I don't think it would last all that long in a DD type deal nor do I know how good they would be in the rain. You can drive them to and from the track as the treadwear is 100 I think, without drastically shortening the life, but I wouldn't. These were my autocross tires, but now I use them for trackdays.
I have never run the Michelin's so can't speak to that, but when my GS-D3's wear out, I'd be hard pressed to switch to a different tire.
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1999 Formula 6spd (The driver)
1997 2500 Ext. Cab Dodge 4x4 CTD 5spd (The Earth Mover)
1970 Nova 5spd (The toy)
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