Love my F3HP, it's built for the long haul. I'm the third owner. That being said, there's no flash shoe (well, there's a slide on gadget), the mirror is fairly noisy and it's probably slightly heavier and bigger than an FM3a, but it's still smaller and lighter than my D700. I still love the camera, though, and have never had a problem with it. It does everything I need a film camera to do. Aperture priority mode works well, and I don't have a problem with the LCD display. Battery life is not an issue, the SR44 cells seem to last forever.
KEH BGN grade F3HP bodies are in the $120 range right now, and that would be a great deal. Add $10 for one of Jon Goodman's seal kits and you're ready to start shooting.