I have a hard time choosing either umbrella or light box for my indoor studio. Just on the mechanical side of it: 1. Do the light boxes require more lighting power? I see most umbrellas use just one bulb, but light boxes use multiple. 2. Is is easy to set the umbrella than to set the light boxes? Also umbrella is easy to pack and transport. This is mainly for small portrait projects, not a permanent commercial studio. I need to set up the background and get two or three of the new lights. I also have two old lights that I plan to keep and replace the blue light bulbs with the new spiral type studio bulbs.