Ajahn Brahm versus others I am practicing samadhi meditation using the breath as an object.  Most teachers say to watch the breath at the tip of the nose.  However, Ajahn Brahm says not to locate the breath anywhere.  I find that these two approaches are very different.  Which one is right?
This stems from the different interpretation of Parimukham in Anapanasati Sutta and relate other Suttas. Here in Ajahn Brahm's tradition what is said is to simply establish mindfulness. (See Ven. Sujato's interpretation in What is the Interpretation of Parimukham in the context of Buddhist Meditation?)

One way to judge what is the right interpretation if the instruction can be put to practice easily, after all these are meditation instructions. In this context both interpretations seem valid.

Also Suttas like Sammaditthi Sutta mentions the calming of verbal fabrication, i.e., calming of thinking and pondering. The beast is way to start this process is the develops concentration by anchoring your mind on a small fixed object like the centre of the upper lip.