I think about this controller has already been said enough. After just 3 weeks of the controller from the PS4 accessories also with me a sickening squeal to the L2 / R2 buttons developed. Ene wear on the sticks I have not - until now. But I must also say that the rubber is very similar to the DS3. If necessary, Sony has indeed touched up here.
A tip on how to be the creaking triggers Lord: PTFE or Teflon spray. This dry lubricant is non-greasy and also nich conductive. In addition, it also does not attack the plastic, such as WD40. I pressed the trigger and the spray tube of each content the fraction of a second on the hinges and the center. Since then, peace.