I've been considering it for a long time, and finally I've decided to just go ahead with it. I'm ready to put down for a quality camera system; something that should last me some time. I've narrowed it down too, but I've never been good with decisions. Especially the little ones. And thus, I am here to share my burden. Both cameras are extremely rugged (after sifting through endless reviews, that much seems to be consistent). The F4 has its expansive lense compadibility going for it, whereas the F5 has the benefit of technology (faster autofocus, RGB metering, ect) though this isnt without added weight. My focus is documentary photography, so I need something that is reasonably fast and accurate. A lighter camera may lend itself more to walking and shooting, but I have no problem getting a workout if it's worth the added weight. I plan on buying from KEH (and becoming a repeat customer if they're everything I hear) and I'd like to buy an inexpensive (not to be confused with cheap) prime lens to test the camera out. I'm not yet familiar with Nikon's line yet, so any help there would be invaluable. Yes, this being my first Nikon, I have a long road ahead of me. Now, if you're still with me, I'd like to say thanks in advance for all the help and for sticking with film. Of course, it isn't as if we have a viable alternative.