Which cities would you prefer to live?

If I have to choose to live in either of cites, Los Angeles or Shanghai, I prefer to live the latter for the following reasons. Firstly, Shanghai is much safer city. For example, the proportion of murder per 100,000 probe to be only 2.5, although that in Los Angeles makes up 12.4. Secondly, air pollution in Shanghai is less severe than in Los Angeles. For example, the score of the air cleanness in Shanghai shows 7 out of 10, although the score in Los Angeles only halved.
However, if I can select to live in other five countries, Tokyo is the most preferable city. Firstly, the city is the safest in those. For example, the least number of murder was committed, only 2.5 per 100,000, while the figure in Mexico accounted for 27.6. Secondly, the road in Tokyo allows us to drive much more comfortably. For example, the table shows the velocity of car in peak time probe to be 44.8 km per hour, while the figure in Mexico is seem to be only 12.8 km. Although Tokyo have a problem with the considerable density, the criteria of the living condition are relatively better than the others. That is the reason why I prefer to live in Tokyo.
(208words)