I really hate that itunes launches every-time I connect my iphone or ipad.  At first I thought it would be an easy fix, simply uncheck iTunes Summary “Automatically sync [this device] when connected”.  Right?  #FAIL  Yes the iphone will not autosync, but iTunes will still launch!  What is the fix?

Turn on the setting ‘Allowing auto-syncing for all devices’ in Preferences, and then turning automatic syncing off for the device in Summary, corrects the problem and prevents iTunes from auto-launching when the device is connected.

Yes you have to do it for each device, but it works.