RE: S-Type 126: "No other is faster"...
They have a website, but i don't think you can read any of the articles online. I've tried to find that edition of the surf in the box where i keep them but i couldn't find it. Once again i have to say that in terms of speed it got more points that were predicted to be given.
In case you didn't know, the comparison was made between the same types of boards. They never compare for example slalom boards to freerace boards.
For slalom racing, the iS is definately better than the s-type, but as Hans already said - if tuned correctly, the difference becomse very little. But there isn't a better way to find out how small (or big) the difference is than to go to a slalom race and see for your self how fast YOU are compared to the others.