I'm thinking about getting an old Gossen handheld light meter. I'm attracted to the idea that I can use it instead of a dedicated spot meter. Does anyone have any experience with these meters. I see there are many different types and I'm not sure which one to buy. I believe that the Lunasix F will calculate filter factors. I see KEH advertises "gray" and "black" for the Luna-Pro but these are not models. Also they get the battery type wrong. I was wondering if the spot attachment works for all camera models. I could theoretically buy a dedicated spot meter but they seem to be quite expensive. If people could let me know which Luna-Pro model they like and why it would be helpful so I can buy something without waisting my money.

-Andrew