Other than the button layout, what are the differences between the HK TC-30 and the 880 to make the HK more expensive.

This is what I know so far:
1) HK is thinner
2) HK has different button layout
3) HK is slightly longer

Anything else? Does the HK have a better screen? Can the activities be renames and/or moved around on the screen? Is the background adjustable?

Can we use the logos etc (favorite channel) for the 880 on the HK?

Thanks.

Curtis