Diabetes Type 1 Support Group
Childhood","Childhood diabetes is when the pancreas in a child does not produce enough insulin on its own. In order to survive, insulin injections need to be incorporated as well as diet regulation. If your child is diagnosed with diabetes, find support and share your experiences here. Caring for a child with diabetes is challenging. We're here for you."

From my personal experience Novolog takes about ten minutes in me to start working and was completely through my system in about 3 hours 15 minutes. Humalog takes about 15 minutes to start working in me and is out of my system in 4 hours.
So there isnt too much of a difference for me but I would say Novolog acts a little quicker and I also needed a little less to get the same effects as I did with Humalog. However, I was able to achieve the same level of control with both.
Oddly enough my insurance will only cover Humalog. I know for others it will only cover Novolog even though both are indeed fast acting insulins as Richard mentioned.
Richard have you tried out the Apidra yet? I havent heard of anyone on it yet but I have seen advertisements for it.