My school has chosen Rear Window for analytical and I have already sat the sac for it etc, but I've heard from multiple sources that since it is Rear Window's final year in the study design and due to it's popularity, there'll be more competition and therefore harder to score high in. I am willing to pick up another text as I have more time on my hands due to completing the courses of my other subjects and am no longer learning content - only doing past year exams. I am looking to pick up an 'easy' text which can allow me to have prepared responses (memorised essays) and preferably have enough resources on it.
Well, in the past, I have heard of people choosing different texts from the ones selected by their school for many different reasons - but I don't think that your reason is really valid - to be honest, there is rarely ever a valid reason as then you've just spent a term studying the text for no reason. Just because it's a popular text does not necessarily mean that it is more competitive or harder to score well. At the end of the day, if you're writing at a 9/10 standard, then you're going to get a 9/10. That is, yes, while teachers are influenced by unconscious biases of comparing different essays against each other, as long as you level of writing is in that bracket, that is what you will get - e.g. a 10/10 is the same as a 100/10 and just because an examiner read a 100/10 before your essay, it does not mean that you will get a 5/10 for a 10/10 essay.
In terms of preparing responses, I know that it's against popular opinion, but there's a real skill that you need to develop with prepared responses in regards to adapting your responses on the day and having a sufficient number of paragraphs memorised. Therefore, the text itself doesn't matter, since you'll hopefully be memorising 9/10s or 10/10s. Ultimately, each text has its own nuances that need to be addressed, so there is no real 'easier' text for you to pick.