Just some interesting links for you...
World's Best Cities:
http://www.citymayors.com/features/quality_survey.html
World's Best Mayor (John So, Melbourne!):
http://www.worldmayor.com/results06/wm_winners06.html
150 Richest Cities by GDP:
http://www.citymayors.com/statistics/richest-cities-2005.html
50 Most Expensive Big Cities:
http://www.citymayors.com/features/cost_survey.html
Fastest Growing Cities:
http://www.citymayors.com/statistics/urban_growth1.html
World's Best Cities:
http://www.citymayors.com/features/quality_survey.html
World's Best Mayor (John So, Melbourne!):
http://www.worldmayor.com/results06/wm_winners06.html
150 Richest Cities by GDP:
http://www.citymayors.com/statistics/richest-cities-2005.html
50 Most Expensive Big Cities:
http://www.citymayors.com/features/cost_survey.html
Fastest Growing Cities:
http://www.citymayors.com/statistics/urban_growth1.html