Hi. I'm planning on buying my partner studio lighting for Xmas. My budget is around £500. I was looking at the elinchrom 400 sd lite kit (£629) or the Lencarta smart flash 2x 400 boxes (£339). I'm confused. Why is there such a variation in price and are boxes the way ahead or one box and one umbrella. He's a keen amateur and I'm sure that's all he'll remain. Thanks in anticipation.