One of the most rugged AAA production lights you find at the moment is the Peak Eiger, which can be found here:
http://www.em-mgt.com/LED/Eiger.html
The Peak lights are all potted (electronics are encased in a special epoxy to guard against shock and moisture) so they are very rugged and come with a lifetime warranty.
It can be ordered in either a single level model (available in various brightnesses), or the QTC model which allows infinitely variable level adjustment, from barely on to very bright if you use a lithium-ion 10440 cell. It will also run with alkaline or NiMh cells, but not quite as bright.
And, because they use optics instead of a reflector you can choose from 3 different beam types, narrow, medium, or wide.
You can also pick from HA III black aluminum, stainless steel, or brass bodies.
And yes, there is even another body option to consider
......... you can choose from a pocket body (the shortest with no lug or keyring attachment point), lug body (a fixed lug and the next shortest), or the keyring (which uses a removable keyring attachment on the end allowing it to tailstand, and it's the longest body).
When you click on the page you'll notice a small box at the top in the middle that says "On Line Support". If it says "On-line", then you can click that and chat with Bob (the owner) and he can help you select the right model.
I think you'd be happy with Eiger QTC SS Key.
If the Peak is a bit to expensive, you might consider the Fenix E05, another CPF favorite single level AAA light which has proven quite reliable.
Another alternative would be the 4 Sevens Preon Revo with the stainless steel body. An excellent little light with 3 levels and a beautifully machined body. The Revo has a 10 year warranty.
