For those of you with Orphek pendants, check out this picture of the new DIF 100.  They have redesigned a large amount of the light.  In addition to much better environmentals (runs 15C cooler than before), and lower weight, there is even a ball-socket mounting system included in the package.  You can theoretically position these lights anywhere and not be too worried about heat exhaust and serviceability.  The pendant even has a quick disconnect system to replace or upgrade the LED in the future.  Tons more photos and details are here.