I am using Multim Touch form the applestore and I am very satisfied. But...
How about a Pro version of Multisim Touch with a price tag around 30.0 U$S but with more capabilities
like being able to use self-defined models, having some more components form the beginnig and being able
to exchange files (like models for instance) over iTunes in the App section.
I think educators and hobbyst would most likely be very inetersted.