Radder, try converting to LAB before resizing any image as well, then just use the Lightness channel, resize the image. The colour channels will remap to the resized lightness channel. You can then revert back to RGB or whatever colour space you prefer using. This (I've been told) can deliver sharper results when resizing. It is also a recommended method when applying the unsharp mask filter, at least according to a Adobe employee who ran the last Adobe seminar I attended. :-)>