If you measure value in dollars (as many do), the Yenko obviously gets the nod.
Measured as necessity, it's gonna be the DD. But mine would not be a Cavalier.
Another way to think of it is that your DD enables you to earn $$ at your job. More than $500,000? Depends on your job, and how many years until you retire (or start working at home).
Since I hope to retire within a few years, I'm going for the Yenko.
