Umbilical torches and YBODs.

[Northern Monkey]

One Monkey to another,

The 100 Watt Impact HID has options of a big video reflector, small video reflector/ wide angle or the standard spot. Good option if you are thinking of video in the future.

Or the standard model is the 100 Watt Compact HID, which has a fixed reflector and as the name suggests smaller in size.

100 Watt HID and F4 pack = 5 hours
2 x 100 Watt HID and F4 pack = 2.5 Hours

50 Watt HID and F4 pack = 13 hours
2 x 50 Watt HID and F4 pack = 7.5 hours

You should get at least 10-15% discount, but thats down to you.