Got a great deal on one through a local facebook electonics sell/trade page thingy. I played with it for several weeks... for what/how I shoot, it does nothing different than my cheap speedlites and Flashpoint strobes can't. Sold it.
Not anything particularly useful. I pressed the shutter and it flashed. I don't shoot much where there needs to be 100% shot to shot to shot color accuracy across a dozen lights --- to me it was just an expensive flash.
I also love them. I have three D1 500s and five Compacts. The only thing the D1 cannot do (compared to the Compacts) is the Hard Box modifier. If you buy the D1s, or any new Profoto system, the Air is a must and makes life much easier.
Ahh, quality of light. It's why so many people love Profoto and exactly the reason not to get the D1s.
I feel they are poorly designed. The beauty of the Profoto light is the protruding, exposed bulb which does a great job of filling your modifiers; softbox, beauty dish, globe, etc. The D1 line has a recessed bulb which does a terrible job of filling a beauty dish; it's made for umbrellas. Profoto realized the turkey they had on their hands and designed and sold the glass dome that goes on the D1s. It doesn't do nearly as good a job as my Compact monolight or Acute heads.
The remote control is great and the consistency is supposed to be better than my Compact, but I'll wait for the D2. Actually, if I had to do it over again, I'd get the exposed bulb Dynalites. The accessory prices for Profotos are ridiculous; $231 for barn doors! Everyone else sells them for ~$60. I'm thoroughly invested in accessories and my studiomate has Profoto as well, so I'm kind of stuck. But don't get me wrong, it's a great system that gets the job done. There's just too much marketing blowing smoke to try to justify their profit margins. You can get a new Dynalite system for the cost of a used Profoto system. You can buy an entire light from Paul Buff for the cost of a replacement Profoto flash tube.
I didn't notice a difference with a BD between these and my acuteb head, I'd love to see a side by side comparison to see if this is real.
Like most profoto gear they are solid, well made, nice to work with and deliver. The air system with them is great: turn them on/off, modelling light on/off, adjust 1/10th stops and probably other stuff all remotely.
Santa Monica, California, US
I did a test shoot of D1's with a Mola Euro.
What you get is a hot spot in the center and very little of the wonderful light quality of a beauty dish. I was using the opal glass insert, which I loved shooting with power packs. With the original aluminum disc you'd very likely not get a hot spot, but I'd wonder what you'd get with the D1 firing forward at a narrow angle and then hitting an aluminum disc. It can't be great.
The glass dome was installed, but I consider it more cosmetic than functional.
The thing is, that with regular Profoto flash heads, the head protrudes into the dish, and fills it. The D1 has a recessed flash tube, and fires only forward at a rather narrow angle.
Those were my findings, and I went with 7b's and Pro-7b flash heads, and I'm glad I did.
Bottom line: it depends on what you need it for, and what light quality you want to achieve. If you like the Terry Richardson style of shooting, you can go with D1's. If you love Profoto for its crisp light quality and wonderful rendering of detail, then I'd recommend going the power pack route.