How important is cocoa content to you in a chocolate bar? I find that Cadbury and Nestle do not use enough cocoa and rely too much on flavourings and sugar. In the last few years dark chocolate has become more popular and there's now a good range of high cocoa content chocolate from the likes of Lindt, G&B, and supermarket own brands, and Cadbury have brought out a 60% Bournville (normal Bournville is only 40%).
Anyway I find some of Cadbury's offerings quite offensive and cheap - Buttons contain 20% cocoa solids for example, and they don't taste particularly chocolatey either.