I used 020's for years, and loved them. The 021 was a poor replacement in comparison imho. The front tyre wears abnormally, hence why Bridgestone probably replaced them so quickly. Too many complaints from users.
At first they're as grippy wet/dry as the next tyre, it's when they go off, and they really go off quickly. Had a few pairs of them on various bikes I've bought, and its been the same on all of them.