The USA made polished wrenches are loose and spread avoid no matter whatever they cost. The RP's are a better quality wrench. Strong and tight.
The deep offset set is a good quality product however.
With all due respect, enough with the Cman Pro bashing.
Your experience is definitely an anomaly. Do a search for Craftsman Professional and do some reading about experiences of other people, especially the full time mechanics here who use those wrenches full time, for a living.
There are many people in this forum using USA-made Cman Pro wrenches, with good fit and good strength. There are also multiple posts showing contact points and play of Cman Pro versus other wrenches, and none align with your experience. I have both Cman RP and Cman Pro, and have put serious force on the open ends of both without any spreading or nut rounding.
If I buy a Honda and have a problem, and start posting "Honda's aren't reliable", it's not accurate. A more accurate statement would be "I bought a Honda and had a problem." You bought a set that set apparently had a problem. Based on the 100's of posts here praising Cman Pro, that indicates a bad batch, not a problem with the series.
And I'll second Stuey's recommendation for a separate thread for the topic, rather then continued insertion into every other thread.
Most of us here are with you as big fans of Cman RP wrenches, especially for the price. There's no need to constantly defend them.