Hi all, I'm looking to purchase a home studio flash kit, for example: M Series ULTRA Studio 600 I want to use it for high key portraiture photography. I've been getting the results I want through editing, but takes a little while to get the background nice and white... You can see what I mean at Kempe Photography. Is the M-Series 600 any good, would it suit my needs? Or would you recommend something else? I look forward to all your comments.. Thanks for your time.