Like many here, I grew up with a Nikkormat FTn and loved it. It felt like an old friend picking up an Nikon S2 after several years with my M4-P and M6. Still to this day I kick myself when I gotinto Leicas there were many S2, SPs, and lenses languishing on shelves at several dealers in NYC. But back to your question.
While I currently have an F2 (plain prism) and have sold off all my Fs, I still love the feel of the F in my hand. If you can get over the removeable back vs swing open, not a lot of difference. Smoother curves, plastic advance lever (though very late Fs have one), same focusing screens, both are fine camera.
I'd pick the F just because of the feel in MY hand.
My recommendation is pick up the F and hunt for a good reasonably prices plain prism for your F2.
B2