My large Boxer dog has been on Briantos Adult for 18 months which he loved and it did not make him "gassy" as some food does. I tried the chicken maxi as he is quite big for a boxer and its even better.
I have been giving Balu, my Mastiff, this food for 2 years and we've never had any issues with it. The pieces are suitably large and seem to taste good without any wet food. My dog needs 100g less than the recommended feeding amount to feel full. His poos are always nice and firm. No issues with digestion.
I have never been able to find a food that suits my Grand Bleu de Gascogne who I took in seriously underweight about a year ago. It has been hard to get him to put the weight back on so a friend recommended Briantos Maxi and it's been coming back very quickly, while my Jack Russell puppy isn't too fond of Briantos Junior. To each his own
My dog gets SO excited when dinner time comes, he has this food every day as his staple diet but he still starts jumping around the moment I start dishing up! Nutritional content is also very good for the price, I give this for breakfast/dinner and meat in kongs/bones/rabbits ears/other treats in between and Rex appears to be thriving on it. Plus my bank balance is much healthier for it too!