More expensive bags and luggage right now, like Samsonite luggage, all sport TSA locks which supposedly makes securing your luggage easier. Supposedly also, it's a durable, secure locking system.
However, my husband's recent trip to Malaysia proved that such locks are really easy to pick. Unfortunately for him, he also forgot that his media player was in the luggage so he lost it.
So although TSA locks are easy to use, lock and open, make sure you also hand carry your valuables. You can also secure your luggage by shutting the zips together with plastic locks.