There are many things to consider when looking to purchase new luggage. Most probably you are concerned about cost but have no fear there is luggage out there even for those on a budget. No matter what the cost however, there are common things to look for no matter what the price.
If you are a frequent traveler, you might want to consider a more durable type of luggage such as that which is made with a hard sided material. If you are just a recreational traveler you will still want durability but not necessarily to the degree the more frequent traveler would need. The hard luggage is more apt to survive the rough handling it receives after it is checked.
What are your needs when you travel? You will want a carry on bag that will hold valuables such as jewelry, cash, traveler's checks, and any medicine. You should try to have a change of clothes and any needs for the next twenty-four hours just in case your checked luggage is lost or delayed in arriving. If you are a Diabetic you should check with your airline on the best way to carry your medications, your glucose testing kit with needles, and emergency glucose sources.
Check with the manufacturer of the luggage you wish to purchase about the warranty. You will need to know just what they will or will not cover if you should need to make a claim. If your luggage is damaged you will also need to know how to make a claim for the damage or if your luggage is lost.