I've been hemming and hawing over the B1's for months, even have a few Profoto modifiers I have picked up at good prices in preparation, and then I saw the Broncolors.
I like the 800Ws, don't like that there is no ETTL and no hint of it in the future, sure many people don't care for it but I want a big battery powered head to light moving subjects and once I dial in FEC then I will be good for varying subject distances with the B1's. Also, the Broncolor (like Elinchrom but they have their own trigger) can only do fake high sync speeds by using the slow t1 times and early trigger via third party triggers, the Profoto is true HSS (no falloff across the exposure) and is first party controller.
So despite the power I think I'll still get the B1's, but my list of wants is very specific so may well not be relevant to most. I think the biggest selling point for the Broncolor will be the power and the removable tube to get a nicely exposed bulb for modifiers, especially softer mods. Again for the B1 I am looking to use the Narrow Beam Reflector and the clear glass to increase and narrow the throw.