Aquasea is fairly cheap for HID and made in Sydney as well. Leo does a few different types from narrow to wide beam. Ive got a 10watt and its done me pretty well. Bashed it through a cave course no worries. In the end you probably will buy an HID so bite the bullet and get one first before buying other lights that will be just tossed in the pile of other unused dive gear that seems to accumulate. You will find you spend just as much on other torches and have no more light.

Matt