I would suggest you to read doctrine of necessity sabahat. The worst condition at that time led to military coup and yes not to mention "yari" of yahya and Zab. But i still like zia and bhutto, coz there were few things common among them. Let me remind you that we need to change ourselves with the changing world. we must give time to democracy to take its roots. In Islam there is provision for democracy to select your calipha through consensus or ballot. so i will go for democracy because dictatorship doesnt give assurance to success.