Another big +1 for S-K.
Williams makes excellent wrenches too. I have the US made versions so I can't speak to the foreign made stuff, but from what I read they are very good too.
S-K wrenches are (in my estimation) just about the perfect wrench for my use. I have both the std and long patterns, but since much of the work I do is in cramped spaces, the slightly shorter std wrenches sometimes fit where others won't.
The stubbys and double box stubbys are also incredibly nice.
S-K pricing isn't Craftsman cheap, but IMO fit, finish and execution is much better than CMan. I have CMan RP and Pro wrenches too, so I'm definitely not a CMan hater, the S-K's and Williams are just nicer.
The moral is, since you'll pay slightly more than CMan prices, chances are you will feel good about getting your money's worth compared.
For all out brute strength, I'm not aware of any wrench with a beam as thick as Williams that is commonly available. I like the feel of the beam and the extra weight doesn't bother me at all.
I'm sure there are other great US made brands, but with the quality/price ratio of S-K and Williams, I think one would be insane to buy tools at truck prices. I know, the truck rolls up on the parking lot, saving you a trip etc.. but for the significant price difference I can eek out a trip to the front door step to save a bundle.
Many available online sources for S-K and Williams, many (most ?) with free shipping and quick delivery. The last time I ordered S-K and Williams items, I placed the orders on a Tuesday, got the S-K in hand Thursday, the Williams Friday of the same week.
Truck tools are good quality (mostly) but nowhere near higher quality enough over the S-K or Williams to warrant the extra expense no matter what you do with them... make a living or otherwise.