Do you have stable employment? If yes, then I'd go for the down payment on a new vehicle. After 5-6 years, it'd be paid off and probably still have lower miles than the van. Plus, you could then trade it in as a down payment on your next vehicle (making your second purchase significantly cheaper and easier to finance). I'm sure you're aware of all this, though. Just thought I'd throw it out there.
Oh, and whatever you buy, make sure to put racing stripes on it, some type of glowing, neon light under it, and hang a set of rubber testicles from the back (if able). Nothing says responsible driver like racing stripes, neon lights, and a dirty rubber sac proclaiming your vehicles masculinity.
