Often I hear that prioritisation of benefits could be solved by evaluation agencies and the appropriate application of cost-effectiveness analysis. As times goes by, I'm convinced that this is a way to avoid if we consider how priorities should be set. In other words, leaving this issue to a technical perspective is not enough. There is a need for a deliberative way to tackle the complexities of prioritisation.
Anyway, if you want to know a review that takes as given the experts view, check this article. If you want to understand the whole issue from a broader perspective, then read the book I quoted in this post some months ago.
Carlos Diaz at Sala Parés