I've had my 2008 for two years now and no leaks, even in the rainy Pacific Northwest winters.
I use the high pressure hose at the car wash and no leaks. I do have a little rattle in the colder weather coming from the right rear. Gummi Pflege seems to fix it for a short time but it does come back.
I am a "no wind deflector" kind of person. Also, always windows all the way down when the top is down. For me a big part of having the top down, besides the sun, is the wind effect. But also, I'm mostly bald so don't have any hair issues. Even at highway speeds I find no significant noise problems, i.e., you can easily have a conversation.