My iPhone is spazzing so everything got jumbled up and it's too hard to rearrange lmao, but just move some words around and my justification is below
The atarnotes book has a complete set of concise, original notes written and edited by law students who did very well in the subject very recently, and therefore they are able to offer a perspective/method in their books which isn't the stock standard way of being taught things. We've developed our books so that they're different in approach to other companies. In addition to that there are original vcaa style questions with detailed step by step approached rather than a simple broad marking scheme.
A+ notes are generally the better of mainstream VCE books but atarnotes is here to offer something different to what you get through your school, trial exams etc.
If its really bothering you, invest in both, you get one shot at VCE so just go all out. In honesty though I think our books are pretty much the best in terms of actually getting something new out of all the additional resources available.