Hi Dunny
I trained in Warriors and Archers as I also decided to get a PPL a few years ago, I would have to say I wish I had begun in the RAA system, I found the Warriors did not get you using your feet, and when I transitioned to RAA, the learning curve was not instinctive , what you learn initially will stick with you, so a really good instructor is in my opinion the most crucial item.
Best wishes with the training, it's great fun,
Mike