man I am almost in the exact same boat, but I have been playing again for about 5 years really. I hit Mizuno MX25's because the guy pushed them on me. I played them for about a year and they are good clubs, but I wanted something I could work a little better with a little less off set..
I just bought the s57's. I have only played 3 rounds with them. Not really sure how I like them. I love the feel of good solid contact, but off shots are more accentuated as you could guess. My first 2 rounds were on a weekend golf trip and I think me and the fellas had had a few too many the night before so I am erasing that round from my memory..lol
I hit them again today and they were butter for the most part. I hit a 7 iron from aobut 175 out and went about 10 yards too long, but it felt great. I have heard a lot of good things about these irons.
Post again and let me know how you are hitting them. I'd like to see the response of these irons from other people playing them.