I had an Elinchrom 500 for a few years and liked it very much. Well built with good power levels, but I did find that only Elinchrom umbrellas or "specially made" umbrellas to fit Elinchrom would work with these heads and that tended to inflate the price (of the umbrella). I used mine with a soft box collar and different soft boxes which got around that problem. I'm not familiar with Style 600 but I bought 2 Photogenic 600's and let my Elinchrom go recently. I found accessories easier to find and fit the Photogenics as well as costing less.