Best physics and ffb -> Automobilista and rF2
Best graphics -> Project Cars 2
Best compromise -> Maybe Assetto Corsa, it has well implemented VR, and some great content, and decent physics, IMO a shade inferior to Automobilista and rF2 in that respect, as well as poorer AI.
I would say Automobilista is my favourite, the AI is on a par with GP4 in the latest build, it's brilliant!

Has lots of great content unlike rF2 as well.
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Tahitian GP Circuit
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www.grandprixgames.org]
Easter Island Circuit
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www.grandprixgames.org]