I have a few older style sockets mixed in with a set of laser etched, and there is clearly a difference. This is far superior to Matco's "enamel" inlay, and snap on doesnt have any provisions on thier chrome sockets for this. 10feet of visibility is definetly a stretch, but on a rack laying flat up, they are very easy to identify. Id have expected them to be stamped as well as laser etched, but Id imagine for cost reasons, they arnt. Acually, Id have to guess that laser etching is cheaper than stamping the sockets now that the process has been refined. Thats why sears is unloading all the old style sockets.
One thing I dont like about sears sockets is that they arnt chromed, but just nickle plated. They seem to get dull very fast, which, while not a big deal, sometimes makes them a bit harder to find when you drop them. Thats more of a cost issue id imagine.
Also, I came across an article that showed how craftsman sockets are made, from start to finish. At the time of the article, they started life as big rolls of tubing in specific diameters. The tubing was then cut and cold forged into shape. I have searched many times for this article. It was in a car magazine I believe, either hotrod or popular hottrodding. If anybody could post this up it would be great. Its a good read.
Jim