Yes, you will get plenty of opinions. Here's mine. I have an I/S and a Std. I have had Dunlops and Avons on the I/S. Because of a bad experience (and that will always color a person's perspective) in the rain

with the Avons, I wouldn't put another one on if it was free! I have been riding on Dunlop E3's for 4 years now and have every confidence in them.

They also hold air better than Avons. When I ran Avons, I was adding air almost every week. With the Dunlops, it's just a few times a season. Matter of fact, they were only down 3 lbs after sitting all winter.
When I picked up the Std, it had Metzlers on it. I like the way that bike handles with those tires, so that is what I have stuck with.