Burton boots might be a good choice since they are designed with your bindings in mind. What model depends on how much flex your after and how much cash you got to drop. Your best bet would be to go to a shop and try a bunch on, they should start to be on sale by now since the season is over halfway done.
I would buy stiff Northwaves, but that's just my preference, they makes boots that fit my wide feet pretty well and I like stiff boots.
i'll throw a third vote in for nortwaves. i've been riding the decads and legends the past couple of years and think they are the best boots out there. super comfy, warm and responsive for my style of riding. their major drawback used to be customer service, but my recent dealings with them have been nothing but prompt and professional.
you are going to want to try your boots on that you plan on getting. you should probably go out of your way and find a decent shop that has a lot of options because boots are the most important part of your gear. that and your helmet, at least... i like the burton moto's btw.