DS1 i used NAN and that was before they bought in all those fancy gold labels and if i changed to anything else he would get a tummy pain.
DS2 i started on S26 as top ups and didn't suit him then went onto Karicare Gold and that seemed good...only 1 top up a day normally at night. When i went shopping the other week they didn't have our usual so i decided to try the Bellamy's organic one so i got it and he has been sleeping through ever since.