I didn't like PG but then that's because it was on Xbox so I wasn't used to controls. I'd like another Test Drive Unlimited, would look gorgeous on PS4.
I like to be able to do tuning etc and customisation but don't really want a hardcore sim.
Sounds like gt7 is about your only option as project cars is a track based racer but apart from car setups there will be no tuning or customisation in that game. it'd purely a simcade racer around real based tracks.
I'm getting both as I'm such a racing car game nutter lol