Analytic versus synthetic phonics

Which is the best for adults?  

In my opinion a fully structured synthetic approach supported with analytic.  Without the structure, the compounding effects don't kick in and this is where the real progress is made. The analytic is necessary however because adults are usually reading texts above their reading level. Thus they need and appreciate analytic skills.

The amazing thing is that these approaches are little known by the adult literacy community. Yet the research shows they are both necessary and highly effective.