I guess this is the best place to post the question. What is the difference between the different Holgas? It looks like the only place I can get one is eBay and on there you have 120N, 120FN, 120GCFN, 120GN, 120CFN, 120S and 120SF. I think the 120S is the cheapest, bog standard Holga. And the 120SF is that camera with a flash. I've read about the flash being a problem if you want to mod it. The battery compartment gets in the way. But I know nothing about the others. Can anyone help?