Greg, you're right .... nobody is going to instantly get "good" tone by switching trumpets .... But, on the other hand, to suggest that different trumpets don't produce different tones is just wrong. They're wind instruments. Their function is to PRODUCE TONE. Some do this better than others. Going from a complete piece of junk to a top flight pro horn will change anyone's tone. Nobody can produce the same exact tone on a complete piece of junk that they can on their own excellent instrument. Physics doesn't work that way.