I have four genuine Eneloop for about a year.
I am happy with them up to a point.
Because it looks that the internal condition of the cell its not that stable speaking about the capacity.
In the first 3-4 months all batteries was looking identical speaking about the discharging curve.
Today there is noticeable changes, every battery looks to have an different capacity.
Not that different to loose my sleep about it, but they are not identical,
even if I use them always all together = the same charge - discharge circles.
At the same time that I got the Eneloop, I got also Sanyo 2700mA and actually eight of them.
In about eight months two of the eight, they died just like that.
Died = They get charged fully as 100%, as soon they fall at 80%, they suddenly fall down to 0% and the device (digital camera) stops working.
Something happens here with those fresh Sanyo cells, from my oldest Sanyo 4X1600mA set , the two of them after 11 years there is still usable.
Even in the Ansmann AAA 1100mA batteries I had two bad apples from the four, with the same symptoms like the Sanyo 2700mA.
The Ansmann AA 2850 Digital even after a year of use looks healthy, but their discharge rate is high.
Even a bit higher than the Sanyo 2700mA.