(89)The notion of award criteria is central to this Directive. It is therefore important that the relevant provisions be presented in as simple and streamlined a way as possible. This can be obtained by using the terminology ‘most economically advantageous tender’ as the overriding concept, since all winning tenders should finally be chosen in accordance with what the individual contracting authority considers to be the economically best solution among those offered. In order to avoid confusion with the award criterion that is currently known as the ‘most economically advantageous tender’ in Directives 2004/17/EC and 2004/18/EC, a different terminology should be used to cover that concept, the ‘best price-quality ratio’. Consequently, it should be interpreted in accordance with the case-law relating to those Directives, except where there is a clearly materially different solution in this Directive.