I would say the broad choices are Actual vs Standard vs Moving average. Then if you want actual costing, you'll need to decide which is most appropriate (FIFO, Weighted average, Weighted average date).
Moving average does not always allow invoice price differences to be incorporated in to your product costs; these differences are expensed if the inventory is already sold. Which is why it is described as more appropriate when your PO prices are accurate. And to me, it doesn't sound useful for manufacturing organisations, although the whitepaper says it can be for some.
Certainly the retrospective adjustment of cost prices that you get with Actual costing methods can be confusing, but if you want accurate cost prices, and if your PO prices are sometimes wrong or affected by currency exchange rate variations, then it is something that has to be accepted.
The whitepaper for Moving average is here.
