Sweeties right, they're really good cells. But still, the 2500mah eneloops suffer the same internal discharge problems as other brands too. You can only make the cells so dense before it goes beyond optimal.
Most quality 2000mah nimh's batteries will outperform and hold charge overnight (or week/month/year) better than any 2500mah, eneloops or otherwise. The 2500's are better suited to RC cars and other immediate use/high drain applications.
(I have over 40nimh AA's in my photog bag, and I've had to invent a way of organising/storing them so I can tell at a glance what use they've had, and in which device they came from.