For the applications mentioned above I use only branded goods, an established brand (here with the pink bunny) has finally lose a reputation, if the quality is not right and not consistently is consistently good. Tests always can there be only one instantaneous overview - if tomorrow the manufacturer of the product significantly cheaper somewhere not the red pencil to very pure pressed I can not know. And because as I said the application range is limited with us, I'm taking no chances, if I buy this again and again here. In this sense, my recommendation for Duracell Plus Power 9v.