PHP / WinNT 4.0 / Apache - what is most stabile?

Folks, This is kind of frustrating. I'm reading the install.txt and near the top it explains about the 2 versions, those being PHP.EXE and the SAPI modules. It then says that the SAPI version is not considered production grade, and is still unstable "especially on platforms older than W2K". Then later on in the same document it says : "Now that version 4.1 introduces a safer sapi module, we recommend that you configure PHP as a module in Apache." OK, so which is it? I am to be using this in a commercial product, and absolutely have to have the most stabile version. I'd prefer to run the SAPIs because they are apparantly faster, but the document contradicts itself on which is most stabile. Can someone help clarify this? (And if someone responsible for that document is listening, could you please update it accordingly?) thanks, -Alan