Ball pien hammers. There is no way anyone will convince me the metal is tougher or more durable than a Craftsman, or that the handle is going to last longer.
Most pliers--again, any quality USA made pliers is going to do the job the same way.
I just can't see spending three times the money over another USA brand. I'm very pleased with all of my Craftsman Professional-series ratchets.
Drill bits-- I doubt Snap-on is the manufacturer of these, so I'm not going to buy an expensive box with the name stamped in it to store someone else's bits.
Die grinder, pneumatic angle grinder, etc. I could buy a new cheap one every year for 20 years, and still be money ahead.
Vise, engine stand, air compressor, welder, etc. Paying for the name, not the actual product.
Wrenches--I write for car magazines for a living, and do a good bit of tech work... I don't have a wrench in my hand as often as a service pro does, but it's a lot more than the average enthusiast. I can't justify the price. If I used them day-in/day-out, perhaps, but even then I'm not sure.
-Brad
