We use Hipp and I can only say positive things
Unfortunately the best milk out there when looking at ingredients is Kendamil. Bonya hasn’t got the same ingredients hence the price difference. HIPP is the next one down from Kendamil in terms of ingredients composition and nutritional value x
I haven't tried it but I hear Bonya it's made by Kendamil and you can buy it in Tesco and Sainsbury's