The question is unanswerable as asked.

A woman who is 5' tall, weighs 100 lb, and plans on touring only on paved roads will have a different idea about what's best than a guy who is 6'5, weighs, 200 lb, and is going to be riding on hardpack. A person who plans on doing weeklong tours in a developed nation will have different priorities from a person who plans to spend a year riding from Moscow to Beijing.