The issue I have found from nikon, looking at various reviews now, is that there arn't really any reliable and sharp lenses to use on a film camera body.
I have learned to take film reviews with a grain of salt and rely on my own opinions. There are a lot of people who, for lack of a better way of putting it, don't know what they're talking about. They don't understand the vibration inherent in film cameras they say the lens isn't sharp.
If there were no sharp lenses for film cameras, there would be no sharp photos before 2005 or so.
As for reliability, I've yet to have a lens break on me. And I own a few dozen. Some dropped. By me.
HOWEVER remember a couple of things. First, the resolving power of film is different from digital. The irregular pattern of film grain is always going to pose challenges.
Second, if the photos are scanned, that introduces another layer of complexity. If the film isn't perfectly flat in the scanner -- and that's an issue with some film stocks more than others, btw -- the photos will look soft at the edges. That's not because of the lens.
Pixel-peeping is best done with digital. With film, unless you love grain (and I do), either shoot in medium format or don't look too close.
I have offered up the challenge that if I were to post three scanned photos, one taken with a $150 Nikon AI 50/1.4, one with a $30 Pentax 50/1.7 and one with a $12 Minolta zoom, no one would be able to tell me which was shot with which. So far no takers.
Pixel peeping, IMHO, is best done with digital. If you need the sharpest photos possible, well, much as I prefer film and much as I hate to say it, digital is a better bet than 35mm.
In terms of sharpness of 35mm SLRs, Nikon's pretty hard to beat, but the truth is that as long as you avoid early (pre-1988ish) zooms and no-name lenses, it's hard to go wrong. That aforementioned $30 Pentax is cheap not because it's bad but because it's ubiquitous.
The recommendation for Minolta was a good one. If autofocus is what you want, you can get a 400/430si or Maxxum 5 for $12 and a perfectly good lens for about the same amount. They're cheap but practically disposable. Great way to start and see if film is for you.
I have a few Nikons and like them (I'm more of a Pentaxian myself) but I personally wouldn't buy an F5. F4 is better and I wouldn't buy that either, a) because most Fs are high-milers and b) I think that much automation makes film photography boring. I have a Nikon N8008 (85% of an F4!) and while it takes great photos I rarely shoot with it. Too much like digital, and if I want the digital experience I'll shoot with my Sony!
Aaron