The headlight looks like the Kendo+ on my Magnum Metro+. If so, I understand why you want to upgrade...it is a low power "efficient" light, works well as daytime running light though!
The connector is a HIGO 2-pin male connector. You probably won't find a light with that specific connector (I think Juiced sells one, but it doesn't look like much of an upgrade), but you can find the male connector to swap onto whatever light you end up getting (I believe that either "HIGO" or "Juliet" connectors will work as long as they are male 2 pin). Make sure the light has a built-in voltage converter (look for "compatible with voltages x to y" etc.) if you are connecting it directly to the battery like the Magnums do.