wood looks lovely but is quite high mainatiance, especially in a family kitchen
it also changes colour over time so it might start off co-ordinatig with your flooring but the in a year or so might not be such a good match
it depends on your budget but I would either go for a chocolate tone granite or a wood effect laminate
either a rich or warm walnut would look nice
if you do go for a laminate, make sure it is bullnosed -this means the lamiate wraps all the way round the edge, rather than stopping at the bottom of it, so it is less likely to blow in wet areas like aroud your sink