Thank you so so much for your fast responses, cherylsafina and prettyvacant. Based on your insights, I pretty much take the wintry weather out of the decisive factors! ( I'm originally from Vietnam, hence my fear of the cold)
@cherylsafina: how is the job market in London? and is there a good public transportation system there? Since I don't think I will be able to buy a car for that matter
As I probably will stay in the lab 24/7 during my time there (minus the occasional break/journey to satisfy my tourist mind), I don't think the impact of living in big city or small town will matter much to me. However, I do want to live in a decent place (just a clean bed+shower) for cheap rent due to my limited stipends. How does the living costs in those cities compare?
Thanks to you two, I also stopped caring for the ranking system and focus more on the research environment of each university. Now even though UWO is a reputable research-extensive institution, I heard that the campus/ class equipments are pretty old. Honestly, I just care about the chemistry department/building and unfortunately I do not have any funds to visit the universities to make a sound judgment myself. So please any chemistry graduate students that have done research in the above universities,can you please share with me your experience
Thank you again for your kind replies!!!!!