I have fed all my dogs on Burns dried food over 14+ years and although it is not at first glance the cheapest it is excellent value.
Some years ago I looked after a friend's lovely (if fat and dandruffy) black lab for the summer. He was on a budget food and I switched him to Burns-not only did he need less of the Burns so the money left for the cheap food more than lasted the months I had him, but his skin cleared up, he lost weight, rediscovered his bounce and a rumour surfaced in the village that I must have failed to look after him as clearly I was now walking a new (and younger) black lab which must be a replacement...and the reviewer who mention the low residue effect is spot on-no more huge stinky poos to bag up - not the best part of being a dog owner, but much more tolerable with a Burns-fed dog..
I have had a range of dogs including border terrier X, lurcher, akita and tibetan mastiff all thrive on this food, and they have had complements on their glossy coats, healthy weight, good condition into old age.
Really do recommend this food if you are starting out with a new dog, have a dog with poor skin and coat, digestive problems or weight gain, or think your dogs diet needs changing. If it suits them you will probably start to see the benfits after 6-8 weeks