An older gent here in OKC owned a red & silver F4 (like the photo). I've known him for 10 years and he loved it but it was a little cramped as he got older- he's into his 70s.
Ran into another guy with a Brutale and had it up for a good price. Talked to a third fellow in Dallas on an F4. No one that I've talked to that owned one (at least three owners) has said a bad word except fast and beautiful. I'd get one if I could find a deal.