I have three PinMics that use the MiniCon and after one 3 week job a friend borrowed them for one of the connectors broke. Not long after a second broke. These things have hardly been used! Un-like the lavs you can't swap out the cable, you have to get a new back plate, which is pretty expensive so I just put locking mini-jacks on.
On a realted note, I converted the MiniCon to XLR adaptors to take mini-jacks so I can use them with all my Lavs!