The wasit width on the Slash is 1cm bigger than the Burton Royale. Depending on how much you think you'll grow I'd go with the Slash. The Slash is rated for a higher weight (up to 200lbs) than the Royale (up to 180lbs) at the same length, so that is something to consider as well. The Slash is the mid-wide version of the Agent and everyone has raved about that board. Haven't heard anything about the Royale.