I never pureed my son's food, I just gave him very small bits of whole foods. I have not used the machine myself. However, I do have a few friends, that have the baby cook. They LOVE it! The only gripe (from one or two) was the size, actually. Mainly, they just wanted to make huge batches and the appliance, is fairly small. I have a friend in an apartment and she said, it was the perfect size. I do personally think making (if you can) the food, is better. They are not watered down and actually taste like real food. I have tasted jarred food and in my opinion, it tasted like an attempt at real food. I think so many kids struggle with transitioning to table foods, because all the sudden they have these strong tastes, they aren't used to. There is more nutritional value and no preservatives, in homemade food. Jarred food will never be better then making your own. The child will always benefit more, from handmade food. As for the baby cook, I have heard raved about the quality and ease of the appliance. I have never met anyone who regretted it. If you want some good puree recipes, this site has some nice ones:
weelicious.com
This site is awesome, for homemade baby food!
www.wholesomebabyfood.com