Many teachers worry about what the best model accent should be, and whether their own accent serves as a suitable model. My argument is that the premise of the question is wrong – there needn’t be a single model accent, and that the teacher’s own accent will usually be the best model, providing that the teacher is an intelligible speaker of English.
English Pronunciation in Use gets a new look this month. The new cover design comes along with a new approach to audio - instead of being on a set of 5 CDs (which were expensive), the audio is now a free online download. Makes the whole package much more affordable.