The results speak for themselfs. Basic training, t-scan & decision making, is still the best way to prevent accidents. A glass cockpit kan give the pilot a false sense of safety leading to complacency. All the new toys that modern avionics provide increases the time that pilots spend looking inside the cockpit instead of looking outside(information overload).
Modern avionics are a great thing when properly used, just keep in mind to have a plan B and once in a while train the basic stuff.
