Some DeWalt tools seem to be the best of that type. Their high torque corded drill, I've not seen its equal for a compact(ish) tool for putting large auger bits through timber. Also sterling job of turning a mixing paddle (although I don't use it for that very often).
Their newer 18V li-ion cordless batteries seem to be quite a step forward (but then so it is for Bosch - the lifetime of their NiCad and NiMh cells in terms of charging-cycles until had-it, isn't acceptable to me)
Could it be that manufacturers are now using lesser quality NiCad & NiMh cells in those legacy tools they still market?
It has certainly felt that way with Bosch blue stuff. My first set of NiMh's (3 of 14.4V 2.8Ah) seemed to last well, the second set far less durable - and I'm reluctant to replace again, even though I have 3 different regularly used tools using these cells.