I just did a master bath in carrara for someone. Made me sick trying to keep everyone from scratching it, setting a tool on it, etc. I'd suggest opting for the forgiving nature of granite. "Set it....AND FORGET IT!"

I put in several Carrera marble baths--walls and floors--over the years. At first, they looked great. Eventually, I regretted them all. (It just wasn't as costly as replacing 72 storeys of Carerra!)

we have white venatino marble in our bathrooms (very similar to carrara). every bit of toothpaste stains them as well as everything else. they also scratch very easily. this does not bother me. i think they're still beautiful, but if you are the type that will be disturbrd by gray blobs/stains in your marble then go with granite. on the other hand, marble is more historically accurate, right? not sure if you care about that. if you do, my friend swears that her HONED white marble does not stain or etch.

if you want to expolore granites, i've seen some pretty whitish granites. delicatus is gorgeous.

http://www.granitedepotga.com/Delicatus.jpg

bianco romano is pretty as well. the link below shows some other alternatives as well.

http://www.granitegurus.com/2011/09/looking-for-alternate-to-white-marble.html

kashmir white varies a great deal from slab to slab as do all granites, but i've noticed this more with kashmir white. some slabs are beautiful while most are very plain and evenly speckled with no movement at all. you'll have to shop around for a pretty slab. most are very blah.

moon white quartzite is worth checking into as well.

Isn't this supposed to get easier? Those are beautiful stones, bmh4796

"Isn't this supposed to get easier?"
Heh heh.