Don't buy cheap bearings! I made this mistake once, they don't last long compared to better quality ones. Although if you can buy them already pressed into the hub then they could be worth a punt.

I am not too sure about weather ABS ones are different, on some Fords the ABS pickup is in the bearing itself, so I am not too sure, something you will need to look into first. Have a look on euro car parts website, they are pretty good for prices and sell quality stuff.