ShowroomLincoln,
These tools are going to be mostly for DIY stuff. I can't say money is no object, but I'm willing to spend more for something I only have to buy once. To contradict that statement a little bit, I don't want to pay too much for marginally better quality either.
Another thing is, I want to pay for the quality of the tool, not for the lifetime warranty it comes with.
S-K seems to be just around the price of Craftsman Professional wrenches (the fully polished ones). Even though I'll wrench only occasionally, I want to make sure I buy something well designed. Something that fits fasteners just right, and doesn't flex under heavy loads. Just a generally well designed tool.
I already have a small Craftsman set, but I noticed quite a few variations in the 3, 3/8" sockets in the set. They all fit a 3/8" fastner just a little differently, and for some reason, that bothered me. Just a tolerance thing I guess.
I guess a lot of this reasoning stems from making a living as an engineer.