We had a honed marble tile backsplash in a subway pattern installed three years ago and still absolutely love it. We're about to move and it's on my list of eventual to-dos for our new house. No issues whatsoever with staining, etc. and our Keurig is tucked into a corner so it definitely gets coffee splashes a few times a day which, I'll admit, don't get wiped off all too quickly with a toddler underfoot.
We used Contempo White marble from Daltile and were very, very happy with the choice. It has a light grey veining, less than carrara, and was a great price (I think we paid around $7.50 a sf with my dad's discount?).
My dad is a GC and likes it so much that he's ended up recommending it (and using it) to clients. I seriously get comments on it every time someone new comes to visit. Love it.
Here is a link that might be useful: Contempo White Marble Subway Tiles
Q
Shadbrick Light Subway Tile
Q