K.G.
I too have 2 children with asthma and all I can say is that they are going to be switched over to the new inhalers as the old albuterol inhalers are no longer in production. It's not like we have much of a choice. Since you still have the old inhaler buy the new one and see how effectve it is. If it doesn't work as well you can always switch to the old one and inform the doctor that the new one isn't as effective and see if he can prescribe something else.
Good Luck....we're in the same boat on this one.
K.