The 980 buttons fit pretty well if you want something easy without having to resize other buttons. If you have photoshop even the elements version you can do batch resizing so it isn't that hard.

To get the 980 buttons copy the "Favorite Logos" folder from the 980 images folder into the 890 images folder. You'll have them for left and right buttons. They are a little short but they are the correct height and still look decent.