I think using cars is a poor way to analogize speakers because like speakers people have different tastes in cars.

My first reaction was to say they are like Infinities or Acuras. Toyota and Honda are good cars and Infinaties and Acuras are their high end versions. I'd put Axioms in that catagory as far as "quality".

That being said I don't see any good analogies with cars regarding value because they're simply not any cars out there with the price/quality ratio that Axiom present IMHO.