...the depth of experience at Eagle cannot be over looked...
Ardmore Flying School isn't exactly 'short' on experience either, 3x A-cats, more than 15x B-cats.
I really think you should just walk in to both organizations (and if indeed AAC are NZQA, try them too) check out the facilities, talk to the people. You'll form a better opinion for yourself if you have a look, rather than believing PPRuNe banter.