AeroLite (http://www.aerolite.ca/) in Toronto, Canada, offers road, MTB, and custom ti frames. They're currently building me a custom fixed frame that I'll use ofr audaz/long-distance rides.

Same sort of deal (and similar prices) to Habanero, ie, you give them your specs, the frames are built in China. US$900 for a custom frame, 4-6 weeks lead time.

I had a good look at AeroLite frames in their warehouse last weekend, and was impressed by their quality. David Du, who runs AeroLite, seems a decent guy, and very professional.