I need some advise on the best type of containers to use for my clients.

What are the best food containers to use and where can they be purchased.

Ummmm -you might get some responses here if you gave us a little more info. What kind of food? What kind of quantities? What kind of clients? Hot or cold foods? For transporting or just storage?

First,sorry for my bad english.
Agree with Ramodeo, if it's for transporting, we have to consider the destination . I live in tropics where plastic container could cause more humidity and tin container will make it hotter ( inside the tin is hotter than out side).
Also there are some traditional foods that should be wrap in leaf to keep the flavour.