I personally suffer far more if the left Circumflex forms a blockage. It
causes throat discomfort, nausea, chest
pain,
jaw ache, dizziness and my blood pressure drops. I can also say that my chest pains have always been in the centre of the chest, never radiating into the arms or back etc. My legs also tend to tingle.
There is obviously a big difference between strong angina and a heart attack, because one has the heart mucles seriously compromised, whereas the other can be reversed.