Control comparison brings up my recent acquisition of a Nikon F4 film camera for under 200 bucks on eBay. Not a damn thing wrong with it, either!!! Except having to shoot (and pay for) film. 8fps burst, but then a roll only lasts 3 seconds if you don't stop.
The F4 uses all my current Nikon equipment, although for some reason it won't autofocus my 18-55 kit lens. No big deal, it's a DX lens, anyway. It worked the 55-200, though, and does well with my 70-300. Its autofocus is slower than my D5000 was, and WAY slower than the D7000 I just got.
But the ergonomics absolutely RULE!!!!! Every feature on the camera has its own dial, button, or switch, and you can reach just about all of them without leaving the viewfinder. And that viewfinder! It's HUGE!!!!!
And complete. Mode, frame count, exposure, focus, all there.
The F4 makes my digital cameras feel clumsy. Admittedly, there's a difference between "consumer" and "pro" setups in Nikon's line, and a lot of the stuff you go to the menus for is irrelevant to film, but being able to change priority mode, metering mode, EV adjustment, AF lock, AE lock, AF mode, drive speed, all without putting the camera down to look at it, is just marvelous. If you've never experienced it then I could describe it all day and you'd never understand, like trying to describe "red" and "green" to a blind person.
I have no "older" lenses for the F4, so I don't get the satisfaction of the focus ring stopping when it should, or the aperture ring..... wait a minute. What's an aperture ring, anyway?
As for the thread topic, I have no use personally for the D600. It's twice as much as my D7000 for about the same functionality. FF would mean giving up the reach I get with the crop sensor on my 70-300, so my bugs and my birds would miss me. And without Kodachrome I have almost zero motivation to shoot film. (Although i keep swearing I'm going to try some of the "modern" still-available transparency films.....)