In reply to Pay attention:
> Checking my rack I find that one of my cams is down to a couple of strands on the trigger wire. It's not too long before it becomes unusable.
> Which camming devices last longest? (and why?).
So why not replace the trigger wires?
The longest lasting cams I know of are some very early original Friends a mate has, they're pretty dog eared, the lobes are funny shapes and most of the bits have been bent and or replaced at least once but they still work.
jk