DD - 5yrs & DS 17months
Only thing we could work out by comparing the tins was HA says it's 100% whey, and the Pro is whey dominant (so not 100%). The nutritional tables do show a few differences, but none of them seemed majorly different to either DH or myself. Have a look on the website www.nestle.com.au/Products and try and compare them if you like.
There's a family history of excema on DH's side and DS has excema (he started off on Nan HA but we changed to SMA as he found it the best for wind and poo), but so far so good with DD.