with my way of lesson planning i can say that i have common ways with the three styles but mostly i feel i am closer to Erika's way of planning,for me the most important thing is to deliver the lesson to the student's head and make him benefit from the lesson, whether i use the coursebook or not.
i would consider the relevance is most important quality in planning and teaching, after all we teach students the language so they can use it and apply what they learn in real life, speaking in a right way is important too but they need to study materials that are useful to them.
personally i plan one lesson at a time and i make sure to plan each lesson differently from the other
i mostly start with little chat about the aims and objectives of the lesson.
it is good to have a coursebook to follow but that doesn't mean that i cant use other resources to deliver my lesson and also having a coursebook means that i already have my plan.
finally my advice to teachers who spend much time planning is that "planning a lesson is good, it lets you know where you are and always keeping up ,,but i also believe that lessons do not always go according to plan ,,,sometimes a good conversation between teachers and students can be more useful than a perfectly planed lesson"