Im soliciting opinins on theses strobes. I understand the Sea and Sea to be quite reliable and have simple controls. The features of the Inon that interest me are the built in focus light and the control to match the aperture settings of my camera. The downside is it only has 4 manual settings. Is the focus light a useful option and do the aperture settings really work? Im also a little concerned about the learning curve of a 100% manual strobe, as I dont get to dive as often as I like. Also...are either or both of these strobes wide enough to cover a Inon wide angle lens? BTW, Im using a Canon s50 in the Canon housing....if this has any bearing on my choices. Thanks in advance.