What type of snowboard is best for me?

It'll be my 3rd year snowboarding bit my first real board. I'm planning on spending $600 total. $200 on boots and bindigs, and $400 on the board. I'm looking for the best board in this price range. This will be my first board so I don't really know what to look for. I know that I will be working mainly on park but love to ride down the backside aswell. Any help would be tight.