I was wanting a Sigma Super 530 flash, but then I saw LED light panels have great reviews. They look nice because of being daylight balanced and dimmable (some of them at least). Can one of them replace the need for a flash unit? Pros and cons? Can't afford both. They seem bright enough for most uses. I don't feel like I need flash for most pics I take, but I would use it to balance out the scene and add a little extra. If I used a flash unit I would diffuse the light. Are there diffusers for the panels, or is there a need for that? I am hoping the panels can tilt and swivel too. I am guessing a panel could be off-camera but wired in... wireless ones may cost too much for me? I like that the Sigma flash can be wireless. Also, I don't need to do a lot of video, but it would be great to have when I did video. So that's one factor that makes me want a panel instead of a flash. Thanks.