I break sockets occasionally because i use 'em 10 hours a day, 6 days a
week, and have lots of impact tools. No, i don't use chrome sockets on the
impact guns. Haven't managed to break a wrench yet.  I do know several other
mechanics who bought ridiculously big toolboxes, at $13,000+ (empty) that
will take them years to fill. Just like guys who buy Vipers, Cigarette boats,
trophy wives, whatever.
    I've found a good rule of thumb for tools: if i need to borrow it twice
in a month from someone, i go buy it. Otherwise, i don't need it.
   If you compare Snap-On wrenches to the fully polished Craftsman wrenches
of similar size, they're not that much more - most people compare the cheap
rough-finished ones to the fully polished ones that are lots easier to clean
and don't rust. - Ed