The paper by Drummond et al. in this issue of the Journal discusses how the principles that have been proposed in previous papers by these authors might be used as the basis for benchmarking health technology assessment (HTA) organizations. This raises a number of important issues, some acknowledged and discussed by the authors, and some not. The commentary by Sampietro provides an analysis of many of these. Two issues strike me as fundamental in this debate: the need for an agreed and objective approach to describing health system decision-making systems; and the need for an agreed and objective approach to the assessment of the quality of HTA reports to support specific decisions.