No, I haven`t heard of that Royal Canin one, I feed my Bob on Quantum, a very good british made food that suits him. But if I were going to change brands it would be to one of the Royal Canin range of foods, they are excellent, most likely the one you are thinking of trying, it looks good!

Chris

p.s. I feed my Ebbs on one of the Royal Canin for cats range!