about a week into my life in the states, I realized that I had two choices, 1) choose a name that's easy for non-Chinese to pronounce or 2) have people butcher my name everytime they try to pronounce it.
I took the easy way out, and said "I'll be David", 11 years later I have yet to hear any non-Chinese prounce my given name correctly.
My last name too, I've given up on trying to get people to say it correctly. My last name happens to be a word in the common English language. I just settle for the English pronounciation (Chinese pronounciation is different) since it was a futile attempt to get them to say it right.
but change to a completely differently last name I have not seen.
Zehui / David Sun