The equipment will be meant to generate revenue. But it can only generate revenue once I learn how to develop for ios\osx. And I can only learn it by having a m

The equipment will be meant to generate revenue. But it can only generate revenue once I learn how to develop for ios\osx. And I can only learn it by having a mac. I don't want shinny. I want something portable (hence the mbp or mba) and powerful enough to do what I want.