The idea to keep in mind above all others when dealing with marble countertops is that marble is a porous stone, more so than granite. Since it can absorb liquids, try to avoid soap scum, excess dirt, and acidic materials like vinegar,alcohol, coffee and fruit juices.
I loved the very marble you are considering but went with a emerald pearl granite in the end. Am delighted I did. Reason was granite is less likely to stain, chip etc.
If you go with the marble a good maintenance regime is a must. It will have to be sealed twice as often as granite i.e. twice a year. I would also reccomend lots of coasters, pan plates, chopping boards etc.
Also I got the granite for a much more reasonable price than I expected. Marble ie quite expensive