Squelchtone wrote:lock picks are not magical, you have to practice a lot and build up your skill. It's the skill or lack of skill of the picker that will usually let you down in an emergency situation, not the lock pick set.
That is important to remember.
But in terms of skill, if you get rusty, it might pay to have hardier picks. When you get frustrated or lose focus, it get pretty easy to break your picks in general. When you get into something like the credit card pick sets, a lot of them are a little flimsy already.