What is the difference between different level Campag Ergo shifters?

Well, Campag has exploded diagrams of ... to be a bit stiffer than the plastic levers.

Oh shit, I missed this, thanks Shanghaied, thats really helpful. I guess theoretically you could just buy a pair of xenon levers, buy a pair of the record lever parts alone, replace them and voilà, you have record levers hahah!

It's worth avoiding the mirage and xenon plastic levers. The brake lever is flexy to the point of poor braking control and a few years back I snapped both of the plastic gear levers on my set. It's kind of pleasing to read that in many cases the innards are the same though!

Thats crazy! What happened? Was it a bloody and gory ending to your partnership with Xenon/Mirage?