WOW, what a great looking coral! The polyps are really 'in-your-face'. Can't be a milli. My first guess would be A. papillare, which can present its polyps in this fashion. Others would be A. aspera, which has two sized radials (which I do not see in the pictures) and A. pulchra, which is more scale-like in appearance. Also, check-out A. abrolhosensis, but they generally extend their polyps so far as to look really hairy.
Realy nice!