Hi, my doctor said they are pretty much all the same. Look on the label and make sure it just has the food and water, no additives or sugars. I personally like to buy organic, especially when we start meats, but thats a preference. So long as you refridgerate inbetween, you can split the jar, no problem. I actually give half a jar one day and the other half the next day.
Good luck!
Jill
