I was at my local Home Depot tonight picking up parts for a MAG-MR16 flood light.
In the tool corral they had a Ryobi 18V HID spotlight. Reflector size is about the same size as the stanley. It accepts their standard Lithium 18V pack, package specs claimed 2800 Lumens and 60 minute run time. Nice thing about it though is that the cells are easily (and relatively cheaply) swapped in/out in the field.
Price was $49, but that does not include the charger + battery
Looks like a nice alternative to the stanley for the budget conscious HID crowd wanting longer run times.