The Sanyo Eneloop rechargeable batteries are highly recommended, since they hold in all devices which consume little power (eg clock, remote control, etc.) extremely long. So normal batteries are only due to the high self-discharge after a short time with no energy. This happens when the Eneloop batteries as soon no longer as they lose what about the 10-20% per annum. For other batteries you're there in the range of 70% !! In addition, the battery is obtained here at Amazon for a great price, so that normal batteries are more expensive at Media Markt and Co. in the store!
Who wants to buy new batteries / needs should definitely rely on the Eneloops! It is worth it!