Being the fair haired (ginger) chap that i am i need to cover up at ALL times during the summer months (even at night for fear of moon burn)!!

I am in dire need of a new hat as the one i have been wearing for the past 6 summers (see profile pic) is dropping to bits

I have seen this but i think it might be a bit chavvy

http://tinyurl.com/65hg9f

What style should i go for? Flat cap, Trilby, Panama, Top hat, Reni Hat?

All suggestions welcome