i've never had any wetness problems in any burtons. and their liners are toasty warm. i've only ridden in their low-end boots (motos, freestyle, ruler), so i'm sure their mid-end and high-end stuff are even more waterproof and warmer.
I am snagging some Vans Aura boots this year. They are a mid flex boot so I can wear them in any conditions. Boa system which is nice and, for me, very comfortable. The boots I previously had were very stiff which makes park riding slightly more challenging.