IMHO, on a DiveMaster course with an internship (which is likely to take 4 - 8 weeks) the important thing is to develop a personal relationship with an Instructor with whom you feel comfortable and compatible. This is quite a different situation from a quickie 2 - 3 day course like OWD, AOWD, or Rescue where you may be one of 6 or 8 students. Over a period of weeks, you will work closely with your instructor and learn a lot of her approach to handling students, interacting with customers, etc. It is the personal relationship which enables you to get maximum value from the course. The dive op itself is largely irrelevant, as long as they have sufficient numbers of students taking courses and customers wanting guided dives. Moreover, the agency she teaches in is not that important (although PADI is the norm here) - it is the personal qualities of the instructor that count.
Alex DM 273773
Alex DM 273773