I think they are like the Harley Davidson of tools.. Yeah, they are cool, tons of people use them and love them, but they are way overpriced for what they do considering that you can do the same job with another brand. Now don't get me wrong, I love Harleys, and I bought a Buell (harley owned) myself, but that wasn't because of the name, it was because it was different looking, and innovative, and thats what I wanted.
For most people, there's no need to ever buy super expensive tools. I can see for professional mechanics that beat the snots out of stuff all day, but 95% of us? Nah, stick with something cheaper that gets the job done and doesnt break, and get more tools for the same price. I'm of the mind that I'd rather spend $300 and get a complete set of wrenches, SAE / Metric, a mostly complete set of sockets, and other assorted stuff from craftsman than a 10 piece socket set from Snap On... Its all about bang for the buck.. and SO just isn't a good deal for what you get.
Its pretty simple:
Does it do the same function? Yes
Did it get the job done just as well? Yes (barring extreme circumstances)
Did it break? No
Did I NEED to spend man times more to do the same thing? No
I'm all about buying the *best* that I can afford, but there's always a point of diminishing returns