I am only using TSA locks on when I (seldomly) need something to check in on a flight to/from or within the US. I don't trust the TSA guy and I don't trust the baggage handlers at ORD, LAX, MIA, JFK ...... . My experience is that the TSA rambos use tools and destroy your property with and without TSA locks. I have one "US" suitcase.

For the rest of the world I NEVER use the luggage with TSA locks, as all airport and hotel thieves have a copy and can easily get into your suitcases undetected. I am not afraid in Asia and South America of things disappearing out of my suitcase but of things appearing in my bags. I have replaced on my trusted Rimova's all TSA locks with NON TSA locks.