I have a 2004 300GT which i am reluctantly selling.
Best car i ever drove, bang for your buck, had it for over a year and not one single problem. Cheap servicing, easy to maintain.
You need to test drive one, comfort,stability and handles brilliantly. Smoothest ride every.
Enough grunt as a daily drive a mixture of sports and luxury if that's what you are aiming for.
I would suggest a 300GT over a 250GT; just a bit more zip