I own not any of the above...my dad just let's me use it. Usually, I'm seen carrying the 1000FN, a good all round SLR with up to 1/2000th of a sec shutter speed. The 100F(J), however, is a little more 'out there', with all kinds of button/switches/dials covering the thing. It's even got a bar code reader for loading custom programs into it...sheesh!
At the moment, the 1000FN is stuck with the standard 35-80mm lens it came with. It get's the job done most of the time, but kinda leaves you wanting more...which brings us to the 28-105mm Macro lens: More aperture, more zoom, more telephoto! Unfortunately, it's on the 100F(J) and I dont get/want to take it out. It's great for those close-up pictures you see in product-catalogues and stunning portraits.
There's a 75-300mm telephoto lens in the camera-bag, but I've yet to try it out. Should be great for spying missions...
In addition to cameras and lenses, you gotta have FILM!