They look about equivalent to me --- the main differences are the Roland has 14 different voices while the Korg has 30. On the other hand, the Roland comes with it's own stand and (apparently) is intended to be set up in ones home. This may appeal to you now, but if you ever want to play outside of your home the Roland will be difficult to move.
The deciding factor for me would be price, as they both have hammer action 88 key keyboards. Here's a link to the Korg -- weirdly, the 'warehouse resealed' one is $200 more expensive than the new one!
