Freejack, CFO is derived by making adjustments to Net Income. When using the indirect method, these adjustments are explicit and listed in the Cash Flow Statement. So you can use either CFO or Net Income as your starting point.
Harro, Net Income, or better yer EPS, is the distillation of millions of transactions into a single number. That is asking a lot of a single number! Maybe an analogy would be GDP. GDP is a single number distilling down billions of transactions. Neither can be the end of the story. In both cases there is necessarily much more to the story than a single number can measure.
Let me clarify my statement on being suspicious of non-GAAP measurements. I was thinking of companies providing alternative non-GAAP metrics in their financial statements. In my opinion, the default assumption here should be that these guys are trying to distort, obfuscate, or otherwise obscure results. In a less imperfect world, analysts are always onto the game. It does bring an interest dynamic. Financial statement preparers tend to think that they can fool the “market” with optics. Efficient markets suggest you cannot.