I'm not sure what you're saying here - you think the light put out by one light is different than the light put out by another one? Honestly, the build quality on the Magicshine looks pretty darn good to me. The only little quibble I have is that I had to add a little tape to the battery pack to be confident of its water resistance. It's possible that it would have been OK without it, but I put it on anyway. If 3 minutes with a little tape saves me $400, I can handle that. Apart from that, the light head, cabling and connectors are all good. I'm sure they could be made better but honestly I don't think it matters. You can make anything better, but at some point there's simply no need.