Post a photo of your space. Note that quartz is quite expensive, and you can achieve the same functional effect by using other types of backsplashes. As a matter of fact, I'd say using something other that the quartz will open up a lot more design options.

We did quartz going all the way up and it looks amazing. But honestly it was more expensive and probably unnecessary. But we have a smaller kitchen and open concept so you walk in and see our kitchen right away. Let me know if you would like a picture.

Just depends on the configuration of the space to me.