While I am personally partial to Texas BBQ based on my years living in Austin (and thinking of the drives to Lockhart in the spring with with the wildflowers blooming as one of my fondest memories) I think comparing across styles is just hopeless. Statements in support of Texas vs KC vs Carolina will almost always come out as arbitrary and reminiscent of something that is being discussed relative to Elizabeth I vs the Catholics - although hopefully without the executions.

For my own perspective, I only rate them within type; best Texas style, best KC style (with or including as a separate style the STL variant) and best Carolina style. And try to enjoy the best of each style based on their unique characteristics.