DEWALT 18V 5.0Ah XR POWERSTACK battery

I am very happy with this battery. It makes measurable difference when powering high-performance tools. For regular applications such as drilling, screwing and sanding wood I cannot see an advantage, actually it seems to last a little less. Considering you can buy 2 regular 5AH XR ones for the same price (which are great batteries btw) you must think what tools you will be using before deciding. Provided that the DeWALT claim for prolonged lifetime proves correct, I may stick to the powerstack for the future. I have a couple from each type so I will provide an update in the future.