There's been several threads regarding which type of scanner gives the best result when scanning chips.
I think everybody agrees that the Epson V33 and its close relatives is the way to go.

I thought I'd show some comparisons and a little bit of detail for anyone who has missed the previous discussions or wondered how much difference there really is.

I have both types of scanners and use my "All-in-one" for a lot of the plain color chips because you can't really see much difference with those chips and it's more convenient for me. However, I picked up some brightly colored chips at the convention and knew they wouldn't scan well on the all-in-one. I was curious how much difference there would be so I made this comparison chart.