Which brand of luggage is better? What are the quality of good luggage?

That would depends on the type of luggage that you are looking for and the need of that luggage. Different brands of luggage would have their own pros and cons, so i would suggest that you should check with the sales assistance and let them assist you in that specific area e.g. You are looking for a wide luggage, lightweight but strong, sturdy

All luggage is made in China. You don't know what quality to expect, even with a famous brand.

Samsonite

american tourister