IMO it's about like
LiIon >> NiMH >>>>>>>>>>>>>>>>>>>>>>>> Alkaline

Now that we have Eneloop and similar batteries, the places where alkaline is the best choice are mostly limited to very low drain devices like remote controls and smoke detectors. This is both for practical reasons - in a high drain device like digital cameras and flashlights, alkalines will derate and not actually last very long, and also for purely environmental reasons - we put thousands of tons of the nasty things into landfills annually and anything I can do to slow that down is a plus.