Sarah was on Heinz Nurture (the regular one) with no hassles, Em is on Karicare DeLact. You said he is already having the nurture, so I would recommend keeping him on the one he is used to, as changing can upset their tummies
I tried my DS on Karicare and S26 before settling on Bellamy's. He loved that one, and I thought it tasted much nicer too. He had been breastfed so it was trying to get him onto the bottle as well as accept formula. Bellamy's was the only one he would accept...but only with Tommee Tippee bottles.
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