There are people who will say the one is better than the other. But I would not buy the Korg unless you found a store to try it out. Most of the times it is personal. But please tell us what is important for you. Lots of functions? Quality? Is this your first keyboard? What do you expect to play? In that way we can help more, but nevertheless: PLAYING IT WITH YOUR HANDS is always a must. It could be that the Korg is 1000 times better, but maybe you just hate the buttons! Understand that sometimes the simple things make a keyboard more attractive than its power or capabilities.
But first tell us more, give some more background.