I'm riding on-one midge bars ( http://www.on-one.co.uk/index.php?mo...N_position=7:7 ) on my fixie commuter and I can't say enough good things about them. I rode a 200K on them and never ran out of positions. Unlike moustache bars (and more like road drops) the midge has a pretty wide, straight top tube. The drops are really shallow and flared. They are perfect. I'd say I ride in the drops about 80% of the time. I have an inline cross brake lever on one side because I only run a front brake, but I've seen these bars set up with aero levers and they seem to look pretty good.

On-One also has the Mungo bar which is also somewhere between a moustache and a drop. Probably worth checking out.