Im a proper "new school" fan, I have been a fan for 4 miserable seasons. Marino and the other legends were so before my time, I have seen the stats, the videos but its not the same.
I would probably have to say Cam Wake as he is simply a class above anything else I have ever seen in Miami.
Ryan Tannehill deserves a mention - you laugh and roll your eyes but most of my time as a fan has been spent watching miserable teams lead by the likes of Chad Henne with no hope for the future at all. Tannehill offers hope, when you have literally never known a successful Dolphins team that means a hell of a lot.
In summary I dont really have an all time favourite because all our lengends were before my time. I think Wake will be a franchise great when all is said and done.