I'll start with Tokyo :
Best
- Convenience stores everywhere (about 15 within 10min walk from my house)
- Food : lots of delicious and not so expensive restaurants and take-away
- Safety : what metropolis of this size could be safer ? (that's a tricky question as there are no other metropolis of this size (35million inh.) in the world). Of course it could be argued
statistically that there would be even less crimes with a higher proportion of Westerners to Japanese.
- Bicycle friendly city
- Shops have all the clothes, electronics or books one could wish for.
Worst
- Police
men (interestingly never the women) harassing Westerners. Maybe because the governor of Tokyo is a self-proclaimed racist and WWII nihilist who wants foreigners out
- The TV ! How could it get worse than it already is ? (well they could remove the news and educational programmes on NHK, then it would be the absolute decadence)
- Difficult to find an international public phone or a bank that accepts foreign cards.
- Old grandmas look at me with suspicious eyes as if they wanted to kill me
- The nearest supemarket is 7min walk away, while it could have been in front of my house

OK I'll take that one out, as I could just move house. Let's choose the quality of housing then. Freezing cold in winter (even when it doesn't actually freeze), and bloody muggy in summer, as there is no thermic insulation or central heating.