Which cities are likely to be the hottest post-economic downturn destinations for young, brilliant, and highly mobile workers? The Wall Street Journal surveyed six trend-spotting experts and they chose cities based on economic diversity, lifestyle and their own personal prejudices. Here’s the top-10 list: 1. Washington, D.C. (tie) 1. Seattle 2. New York 3. Portland, Ore. 4. Austin, Texas 5. San Jose, Calif. 6. Denver 7. Durham, N.C. 8. Dallas 9. Chicago 10. Boston Source: The Wall Street Journal, Sue Shellenbarger (09/30/2009)