Take it to the ceiling, especially if you are installing a vent hood. Should be minimal cost for the small space but will have maximum visual impact.

Thank you both for your input. That’s what I’ve decided would look best too. I will have a hood vent the Quartz will go to the ceiling. How about on this wall. I have a corner sink with the quartz stopping under the upper cabinets I will have a lot of space there for potential water to splash on that wall. Any ideas?

Sorry for the less than great lighting, but here's how I ended the backsplash when I had new counters/cabinets installed.

Symmetry is always pleasing, end it at the cabinets and place a floating shelf or two in line with the cabinets, which will give you a clean finish and an edge. And it won't look awkward like most backsplashes that end halfway.

Ah, I see what you mean... you could take it out to the edge of the countertop and stop it just even with the bottom of the cabinets, then add shelving or something above.

Thanks and I agree! :)