Most luggage is equally durable. I'd suggest going with whatever brand you have a strong affinity for.
I know a few Airline employees who really love Travelpro Luggage.As they are using their luggage on a continuous basis I take that as a solid recommendation.
luggage works
Your question did not specify a brand but I have had the same Samsonite luggage for 10 years and have not had ANY issues with it. They actually offer a warrenty but I have not needed it! I would HIGHLY recommend Samsonite. It is worth the price!
A company called Paklite makes suitcases with padding inside to keep stuff from breaking.
The Delsey luggage brand is known for being top quality and top-rate. The luggage is sold through retailers like Macy's and Zappos.
it is a famous brand.
Check out Irvsluggage.com, the luggage is Samsonite Black Label.
Dakine brand luggage is rated as one of the best offered. You can find good deals on Dakine brand luggage on Amazon and eBay. Sometimes you can find free shipping and this only helps out on the good price.
I suspect someone in China makes it. Brand Collection Limited (guys behind the Redland Luggage brand) hold the global licence.
One can purchase Tripp Luggage at the official Tripp Luggage website. Alternatively, it is also possible to purchase this brand of luggage on Amazon or eBay.
Express is good when it comes to price and all that but it still depends on what you are looking for in a luggage.
Heys USA is know to make lightweight, durable luggage.