Eneloops are definitevely the best; FYI some of the Amazon ones are rebadge eneloops (and apprently some Ikea ones, I didn’t know that…). As they change the model quite often, try to find anything about “made in japan” version (most often you will find this small detail in customers reviews or zooming in the pictures if you find a lucky side shot showing the fine prints).
i’ve got a lot of AA and AAA rechargeable batteries for many things and the great thing about eneloops is that it keeps really well the charge even when not used. Most of the cheapest ones are losing charge fast and there’s nothing more annoying than having empty batteries while you need it charged for a quick swap. 2 eneloops in the controller and 2 already charged waiting to be used is the way to go.