Arguably, no one is fighting harder than Infiniti. How? By building a very good car. Powerful, quiet, roomy, comfortable. However, those descriptions can be used for any of the others. So what's a potential luxury car owner to do? Study the specs and the list of standard features. They'll be pretty much the same also. Compare prices. Same. That leaves two things, both highly subjective: How do they look? How do they drive? That's what it boils down to and both questions lead to somewhat subjective answers.