I looked at one of these with interest to fit to my Canon 430EX flashgun. I take quite a few indoor shots as part of my job, particularly with people close to walls etc and hate the dark shadow that direct flash produces and the localised hot-spots. I tried a diffuser over the front of the gun and whilst it softened the shadows a little it was still visible. Bouncing the flash off walls is not really an option due to wall colour and the high ceilings are no better. I have just bought a Lightsphere but off eBay for £8.99 including postage from China. Initial results look good and I am pleased with it. I don't expect it will be as well made as the Gary one but it seems to work just fine.