Please see my review on DeWalt DW 9043 bulb, as most of that applies here.  Bulb worked great, but runs very hot.  Lens very hot, after 2-3 seconds touch, reflector about the same.  Metal hinge/holder too hot to touch.  Some plastic smell in first 10 minute inspection.  Checked again at 1 hour 5 minutes (total test time) and still the same. No scorched or melted plastic.  A winner...UPDATE April27/12:  Still working great with normal drops and bangs,lens heat not an issue...  UPDATE  dec 31, 2012:  Wow, this bulb is tough thru drops and bangs from daily use; I wish I could find a girlfriend that was as bright and hot (and lasted as long) as this bulb.