Hi gang, Lately I've been eyeing these 4-in-1 combo machines--they're real tempting. I've seen some HP, Lexmark, and Canon units. Does anyone have one, and can you comment on it? Anything to avoid or look for? I have a regular B&W laser for high-quality stuff, but I'd like to have a color printer and a scanner, and it'd be nice to save desk space and get a copier too.