Wow, thanks everyone for such informative information and links Really appreciate it! I'll check out some of the brands suggested and see what i come up with.
I personally wouldn't mind swapping Koda to raw food once i'm in a more stable situation money wise. I feel like he'd do well on it. Kind of off topic from my original question, but Koda was on Holistic Select for a few weeks because I won a free bag at the Dog Lovers Show. I was quite surprised that I didn't notice much difference in him, his coat didn't change at all. Mum reckons he might have been a little bit calmer when he was on it, I didn't notice that though. I also think he lost a tiny bit of weight when he was on that brand, which i didn't want, I was happy with the weight he was at. Can be hard to tell if he's too thin with all that hair in the way. I like to keep him lean, not skinny though, just healthy lean.