I use swix. As far as I know ski wax and snowboard wax are the same. I bet ski999 could tell me if I was wrong, but your bases are made of the same thing and you put wax on the same way.
Anyway I know swix works well for skis and boards(had friends at hood tell me about boards), and I belive ski999 likes the the Toko wax. Its all pretty good if you get name brand.