This 520D tilt ball switch rocks. We found this switch with stronger pins, heavier mechanism and body, and more rugged than any others we have used in the past and in sleek black.
The leads fit breadboard pins tight and stays put. Nothing sloppy about this design. The switch is sensitive, but not twitchy....if you know what we mean. You get great activation without a lot of false positive indications.
This is the tilt ball switch you have been looking for, because we were looking for it too.