I'm on my second set of Road Smarts and I like them. I guess I don't have a history with Dunlops, so no built in bias yet. No problems due to manufacturer defects.
I really like the Road Smart handling, smooth and easy turn in, exceptional grip (wet and dry). I find that they feel very secure in the tight twisty stuff and do ok on the slab. They also held together for me and handled fine to the end of tread life (6-7k miles for my sloppy riding style)
I found the BS 020's to be the most stable on the slab, but lacked the Road Smart's "feel" in the curves. I had a defective front 020 that wobbled like crazy, it was replaced without hassle by the vendor. (same mileage 6-7k) I didn't (and haven't) give up on Bridgestone, I wore out 2 more sets.
I've also worn out a few sets of Z6's, very good handling tire also. Although, the front and rear cupped really badly toward the end of tread life that made the last 2k miles miserable due to noise and handling degradation. (same mileage 6-7k)
If this tells you anything, it should be that different riders have vastly differing experiences with the same tire.
I've been hunting for that perfect tire with an acceptable mix of grip and mileage. So far, tires made for the ST (with the exception of the ME880) have all provided "reasonable" grip, but what I would consider low mileage. Can't be unacceptable, cuz grippy high mileage tires just don't exist.
Haven't tried the PR2s or Avons yet.
My 2 cents.
