My experience has been like this:

* Low drain devices go through Eneloops far more quickly than Energizer Lithiums -- about three to one. This includes wireless game controllers and my wireless trackpad.

* High drain devices go through Eneloops somewhat more quickly than Energizer Lithiums -- a bit less than two to one.

* Eneloops self-discharge pretty quickly, losing perhaps half their charge in single-digit months. Energizer Lithiums read "full" after at least five years in storage.

* Eneloops are rated for 1900 mAh when new, Energizer Lithium AAs are rated for 3000 mAh.

I use Eneloops far more often than anything else in the AA form-factor, but I do that understanding the tradeoffs.