Hi Im new in this, but im taking 1.4 and then 1.5, from what i have been told, its easier the 1.4 than 1.5. So ive decided to take 1.4 and then get the 1.5, if you pass the 1.4, when you take the upgrade exam to 1.5 there are less questions and you only need to focus on the new things on 1.5.