if i had to give blanket advice for this i guess it would be
Dallas Chicago and Seattle locations can serve North America well a Singapore location can serve East Asia (India, Australia, Malaysia..ect), and Germany for EU hope that helps there is no best location of anything unfortunately but there are good reliable or great services still depends on your needs
Almost time I chose a server, the country that I would like to pick is USA.
Because I want to target audience in that country, choosing a location there will help my website loads faster and it is also better for SEO when choosing a country that you are wanting to get SEO benefit ffrom that country.
Hi I have said before that this question does not make sense location only matters for audience and geographical strategy and nothing else as long as you can effectively serve customers that is what matters there is no magic location