Einstein E640 Flash Unit Vs Profoto D1 Air 500 w/s

[peety3]

I read the commentary on Strobist regarding the three choices he compared (which unfortunately was the old-style Alien Bees units, not the Einstein), and I decided to follow his logic of "investing" in the durability of the Profoto gear by picking up a D1 Air 500/500 kit (used). I'm thrilled with the results, and haven't ever wished I'd picked something different. The light has been perfectly predictable and absolutely rock-steady. The Air remote leaves a tiny bit to be desired (can't tell the power level from the remote), but I may pick up the USB/computer solution next year to take care of that. My third shoot with the D1 Air kit was a non-profit board meeting where they wanted fresh headshots of staff and board, plus anyone else who wanted a new headshot, and a variety of group shots. I had no idea what to expect, and the group shots did keep me on my toes, but the Profoto kit made the shoot easy. I'm happy that there's a world of expensive (but durable) light modifiers waiting to be bought that will all mate with the D1 units.

At family Thanksgiving, someone tripped on a light stand and knocked over one unit. The frosted glass that protects the tube popped out, but otherwise the unit emerged unscathed and it's happily flashing away still.

[gandhi]

I read the commentary on Strobist regarding the three choices he compared (which unfortunately was the old-style Alien Bees units, not the Einstein), and I decided to follow his logic of "investing" in the durability of the Profoto gear by picking up a D1 Air 500/500 kit (used). I'm thrilled with the results, and haven't ever wished I'd picked something different. The light has been perfectly predictable and absolutely rock-steady. The Air remote leaves a tiny bit to be desired (can't tell the power level from the remote), but I may pick up the USB/computer solution next year to take care of that. My third shoot with the D1 Air kit was a non-profit board meeting where they wanted fresh headshots of staff and board, plus anyone else who wanted a new headshot, and a variety of group shots. I had no idea what to expect, and the group shots did keep me on my toes, but the Profoto kit made the shoot easy. I'm happy that there's a world of expensive (but durable) light modifiers waiting to be bought that will all mate with the D1 units.

At family Thanksgiving, someone tripped on a light stand and knocked over one unit. The frosted glass that protects the tube popped out, but otherwise the unit emerged unscathed and it's happily flashing away still.

Thanks for your advice, Looks like D1 Air for sure is a good product, but what I am really interested is how good is D1 Air when compared to Einstein ,
I see some charts provided by Einstein website.