Without 'baggin' HSD I would point you in the direction of their 'ingredients' list ...
Recommendations ?? Nutro (limited Availabilty in Australia), Royal Canin or Eagle Pack is also suppose to be pretty good (again limited Availablity in Australia)
Advice?? Research, Research and then some more Research ... please PM me if you'd like some documentation/articles with regards to 'what' is found in some of these Super Premium Foods and their benefits/drawbacks