While mounts are nice, and everyone really needs one for Mooshu (everything is so far apart!), KingsIsle really needs to go back to the drawing board with them. What's the point of charging different amounts if they all do the same thing, apart from appearance? That's pretty much why I just picked a broom. I would have liked a dragon, but everything has 40% speed so why bother?
Because if you only needed to buy 1 mount, they could not have their chrity Meowmedon. KingsIsle would lose money on them. And you should be happy with the mount you choose.