You won't go wrong whichever one you choose, but consider, if you will, that the Elite Max is fully regulated on the three higher levels. That means you can run alkalines in it with flat output if you want. Plus it has some nice programmable features, perhaps the most useful one being the ability to set it to come on at the last level you used before you turned it off, and the stronger Lexan case with screw inserts.
Worst things I could say about the Eternalights is that they are slighly bulky for the battery and circuit size, but then they have to be if they are to float with the lithiums in there. Plus battery change requires a screwdriver...but then, you almost never have to change them. The first sophisticated LED light I ever had was an Ergo Marine my mother sent me from a Hammacher-Schlemmerer catalog about 6 years ago. I have lots of flashlights competing for my attention, but it still resides by the bedside and gets frequent if brief use, and I never have changed out the batteries it came with. Quite something.
- Bill