Thanks for the good info from all of you. IMO you can also judge the answers by the answers given in this and other threads. So Mike I agree the Gallery is not the only way to judge, it is just a way that is the quickest. For many of us that spend a good deal of time on this site you learn the experienced and less experienced participants. You will notice I ask questions but very seldom offer any answers because I don't really feel I have the expertise.
I didn't mean to besmirch anyone's abilities only to say that you learn to judge the answers and take them for what they are worth.
At this point I only have a Gossen Luna Pro, ( not a Digi-Pro) so I will have to learn to use it for the time being.