wats i4 ?
if the 600ex goes for 700 a piece 3 pcs would be 2100 about the price of a bare B1. I think Prophoto may have done their homework well enough if you are coming over from a canon or nikon flash user pov. Plus what no one wants to talk about is if you really use the camera makers flashes that heavily the wear and tear is pretty high - flash tubes go faster with higher usage. When I take into account the repairs over the last 5 years - I seriously think that if they had batter powered studio flashes that were good enough and reliable enough I should have gone that way. Now it looks like a case of see who else want to come and play in this area. The Chinese do have similar to B1 just with out the power adjust and TTL, they have other with external battery pack that have power control via radio trigger. The enstiens have power pack, pocket wizard ttl. So there are choices still.