hi... i too have used acana
(and orijen)
i also agree about the 'puppy food' marketing,it is just that, marketing
i think any grain free kibble suits,i feed grain free and raw,but the kibble i have found that suits my boy best is fish and potato
if u are feeding kibble i dont think u can go far wrong with any of the 'premium grain free brands'... id just use the adult tho