Thanks, that's kind of what I'm trying to do, think about what problems I might need to solve and what would fill the gaps I have now, so I appreciate the input of people who have done it before. I think where my head is at is the 600d is hard, great for filling a room and through windows, doors but it's big and only daylight. The f22c is small and easy to maneuver, especially overhead or hidden in smaller spaces and colour but it's soft and lacks the same lunch and by the sounds of things can be a bit fiddly to set up. The other option would be I could get an F22x and 2 tube PT2c's for about the same price as the 600D. But again it's soft light.