I got a D1 1000Air and a D1 500Air. I have mixed feelings about them. I prefer to use my Profoto Pro-Series packs and heads. The interface is a bit difficult to operate (modelling light brightness, AirSync channels, battery mode, etc.). The output is pretty consistent. The color is a bit off compared to the Pro-Series. It is impossible to mount them pointing straight up. The internal reflector design is not the greatest, the optional glass dome is nice and makes it behave more like a ProHead. Though, there are small diameter grids available that mount directly to the head (no reflector needed). Portability and the BatPac are great. AirSync works great. Durability? Dunno, only had them for 4 months, but a modelling light is already gone...