Food is... complicated.
There really is no "best food" but I will say that I have learned that companies and where their sourcing, what their manufacturing facilities look like, their testing, their quality control, etc, is more important than simply reading an ingredients list.
Personally, I have found my dog has done best on Acana. We switched away from it for a while, because frankly, I don't think Champion is all it's hacked up to be, but with that said, I can't deny it's what my dog does best on and we always end up back with it. He's eaten it for the longest time out of any food. Approx 2 years, then we stopped for a bit and now he's been eating it again for about 5 months? We do the Singles line tho (Lamb & Apple, Duck & Pear) and rotate between the 2. I prefer them to their GF line (especially with the new additions of all the lentils, chickpeas, etc).
I don't think most pet dogs will need a food like Orijen and wouldn't recommend it.
Canidae is in the process of moving away from Diamond (Thank God for that!) and they have a new GF line coming that will be made at their new Ethos plant. The line actually looks really decent and I will even consider feeding it in the future.
I'd stay away from most Earthborn GF's (too high ash content, their calcium/phos levels are too high for my liking, even though it's a bigger concern for growing large breeds, I still wouldn't choose it for any pup). Their grain inclusive line is much better IMO. They also make Pro Pac.
Btw, the amount of glucosamine in the food is probably miniscule. I wouldn't worry about it or even think it's helping with anything.
There's a lot of really good price friendly foods that probably 80% of pet dogs will thrive on. My pup seems to get bigger/softer poos on chicken, and a little bit more eye gunk, otherwise I'd probably be feeding a more 'plain' food from a company like Precise or Royal Canin, but a lot of the grain inclusive options all include chicken.
I also really really like Annamaet, amazing company with loads of expertise, but my dog doesn't like the taste of the food.
