Use the Ferrari as a daily driver!
Sorry to hear about the M5....man, you have the worse luck with BMWs. Sounds like you need a Lexus!
Anyhow, good luck with fixing your M5.
FYI, 52K miles on the E46 M3 with no issue with the engine & SMG II so far....(knock on carbon fiber). The E46 M3 has been a great daily driver so far.