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hmmm... they must be something else then... like gas discharge (sodium) bulbs, like a street light. PAR floodlights are relatively directional - just like your outdoor patio floodlights you get from bunnings, they use the same globe.

Scott, Sounds like those lamps originally were HID. HID is EXTREMELY bright... far brighter than incandescent or halogen. It's the same type of light that modern cars are now using (think BWM, Audi, lexus, etc) with that super bright, very sharp beam. They do need a "ballast" to step up to very...

Looked into to specialised industrial HID lighting at all?? That's what most warehouses use AFAIK.

I have the solution for you all: You guys need to buy "MAINS VOLTAGE HALOGEN" lamps. They are available at woolies. They are basically a halogen globe inside a light globe bulb. They are a little more energy efficient than a tungsten filament lamp (ie. incandescent)... a ~70W mains halogen...