Based off of your requirements, I would recommend the Fenix E05 myself. You're getting an extremely durable little light that's in the $20 range. Yes, there is tougher stuff out there - I was going to recommend that you spend a little more to get an Arc AAA, until I saw the brightness requirement.
As choombak said, it's excellent for close range tasks. Personally, I find that the runtime is a little small. I prefer a dimmer light with longer runtime for my pocket - If I need to do some more serious lighting, I switch to PD20 R5 that I carry in my bag.
I'm a little curious as to what kind of usage your light will be seeing. If it's just meant to be a keychain light for edc type usage, you can get away with going a little dimmer than you're currently asking for. That will give you a little more to work with in terms of options.
If you plan on using your light quite often, like at work, then there are other single mode lights that are a little bigger, but offer significantly better runtime. You sound like you've thought this out pretty well though, so sorry if i'm just reiterating a bunch of stuff that you've already considered. I'm sure you'll make a great choice regardless.
As choombak said, it's excellent for close range tasks. Personally, I find that the runtime is a little small. I prefer a dimmer light with longer runtime for my pocket - If I need to do some more serious lighting, I switch to PD20 R5 that I carry in my bag.
I'm a little curious as to what kind of usage your light will be seeing. If it's just meant to be a keychain light for edc type usage, you can get away with going a little dimmer than you're currently asking for. That will give you a little more to work with in terms of options.
If you plan on using your light quite often, like at work, then there are other single mode lights that are a little bigger, but offer significantly better runtime. You sound like you've thought this out pretty well though, so sorry if i'm just reiterating a bunch of stuff that you've already considered. I'm sure you'll make a great choice regardless.