I've got an F100 and would not be without it. I owned an F5 a few years ago and loved the output but not the weight of it. The F100, in my opinion, is about the best film body with a built-in winder you'll get without going for an F5, F6 or EOS1.
The metering is superb, it's incredibly reliable, it's solid and people will always want them as they are so good. The only criticism I've ever heard levelled against them is that, on the early ones, the prongs on the film rewind are made of plastic and were prone to snapping. However, later ones (where the ends of the prongs are square) are much stronger. If you are careful how you load and unload film, that shouldn't be a problem.