It is neaxt to impossible to give you any kind of good answer without knowing what model K2 you have. It could be a low end budget model of K2 or it could be a really decent high performance board. So try to find out what model it is or snap a qick pic of it so people here can identify it for you. From there we can give you much better advice.
As for Burton, I am not up on their gear, but it is really like anything else, they sell some some crap and they also sell some gold. It just depends. Don`t hold me to this, but I think the Customs are kind of on the bargain end of their binding line. If so, you might think about upgrading them. Rome 390`s are solid.
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