couse it works slightly faster and got better battery life :) and it's new, and it's promised, and some people have OCD about that :) (not talking about security updates that come with it cause they are actually pretty useful)

I took some, phone was underwater for a very short time, suggest you take pictures by pressing volume button, cause screen goes nuts when in water  phone is still okay, however have in mind that you won't be able to charge, call, use jack for about ...