The L35 from batteryjunction (
http://www.batteryjunction.com/titanium-l35.html ) is a robust and affordable HID. It's not exactly pretty, but it sure is practical and the handle makes it easy to carry around. It uses special battery packs though, and if you want spares they are pretty expensive ($115 each).
Another option in the same price range is the new Fire Foxes FF3. This is a much smaller light, but it's actually more powerful than the L35. It uses four 18650 batteries, so that's a plus. There is a thread about this light a few places below this one (as of this posting), with lots of pictures and beamshots.
You can buy it directly from China for $270 with free shipping. It's the first website that comes up when you google Fire Foxes FF3. I bought mine from there and it got here in about a week. Awesome little light, but with less runtime and no handle it might not be as practical as the L35?
Edit: BTW. I just ordered another FF3
It's just THAT cool! the power to size ratio of this thing ridiculous