Ordinary General Purpose Compost will be fine, fumanchu, but using compost on it's own in a planter is not a good idea as when it dries out it's a pain to get damp again. I use 3 parts Compost, 2 parts sand, and one part potting grit which while helping drainage also helps keep it damp and will take a rewatering easily. Put some Blood, Fish and Bonemeal in as well, if you have any, to give the bulbs as good start.
