My dad is buying me an airbrush for my birthday (I am going to be 30 next month...that's another saga...). We are going to Harbour Freight tomorrow because there is a decent compressor on sale that has a regulator. Here is my question - would a harbour freight airbrush work for cake or should I ask him to buy me a KopyKake airbrush to go with my Harbour Freight compressor? What are your thoughts. I know that I should get a KopyKake compressor, probably, but beggars can't be choosers. Any help would be great.
Thanks!

Most of them work in very similar ways. some offer more control. The ones with needles can clog, but some people swear by them.

See if they have a return/exhange policy and give it a try.