The bonuses usually kind of suck. The coolest ones (here in the US at least) were the little statues. I got my hands on the Giratina, Lugia and Arceus ones.
I haven't pre-ordered yet, which is odd as I usually do right around the time they announce the games, or as soon as you can pre-order them. Both legendaries look really cool in my book, and I can't seem to pick one over the other. So that alone is making it hard for me to choose which copy. I think as soon as I find out more about the typings of these two and just more about the games in general, I'll go pre-order.