1. IPT has a much broader after HSC use than SDD.
It deals with information systems and provides you with an understanding of how these systems are setup and function in our modern society. Informatics can be used in many fields such as medical, engineering, banking
You should, at a minimum, become skilled at spreadsheets/databases and have an appreciation of web and publishing design principles - all of these skills are easily transferable to other industries/studies.
2. Its easier to get Band 6 in IPT than SDD (imho)
3. SDD requires you to be proficient in computer programming languages - students with strong mathematical reasoning tend to do better in this subject
Comments like "such and such a subject is boring" are misleading, anything can be boring if taught "badly"
so consider the teacher - are they passionate ? committed to their senior classes ?