have you had a look at power beam? http://www.powabeam.com.au/categories/Spotlights/ I have 2 types 145 and the 175 they give of a better beam than my mates 170 light force(did over easter) and get your self a rechargable led light for walking around you can even run of the batt in the pack.
If you can afford them go HID they are a round a 35w bulb draw so your batt last 3 times longer and give of a better light http://www.4h.com.au/prod194.htm