I can't post a link, but you could google HKJ's July 2011 review of single AAA lights, most of them are SS.
I really like my 47's ReVO SS S2, but they don't do that model any longer, sadly (current controlled, bright as anything on high, good low and medium levels, it's such a good little light, it goes everywhere on my keyring, and has been so useful so often; and still looks like it did the day I got it, and trust me, it's had a hard life! Some of the other stuff on the same keyring is in pretty bad shape).
Then there's the LuminTop WORM Stainless Steel, with the XP-G R5 it's max output is 70lm, and it has 2 modes - 10/70lm.
There's also the Maratac AAA stainless steel. 3 Modes, 1.5/18/80lm (oops already suggested). Or their 2 mode polished SS, 1.5/115lm.
Or the Nitecore T5s 3-Mode (which seems amazingly similar to the Revo SS which I like).
There are quite a few options out there that meet your needs.
If you're going for el-cheapo, you could take a look at the TrustFire MINI-03 Cree XP-G R5 3-Mode.