if you want an great value in HID.... get the illuminator from amondotech instead. The 4200K bulb is worth spending a little more. Much more practical for real-world use.
I have lots of lights around here, including an illuminator, a gigantic thor with major modifications, some 1W and 3W LEDs, a 5W Nuwai LED, some headlamps, and some various incandescent tactical style lights running on li-ion batts.. The big spotlights sit and sit... bought a float charger and periodically switch the charger between the 2 to keep em topped up. I use them once and awhile for working outdoors at night. They are mostly TOYS that see little practical use. An AE-powerlight or WE boxer would be a much different story, much more tool oriented because of the more forgiving form factor. I reach for my handheld incans and LED headlamps more often than anything else. I plan on building an ROP 2C very soon, because I foresee this filling a nitch that I don't have, and will actually use frequently.
