Best way to strip paint?

Whats the best way to strip the paint down to the metal? Paint stripper, sand blaster, DA sander? Let me know what you guys think

Probably should add that it will be on a 69 A108 Window van

The best is the most expensive, media blast by a company that understands how to do the job right. Chemical strip with aviation stripper works good, got to be sure to neutralize the surface and especially the seams. DA's are good but that is a lot of sanding, but can be done. Chemical strip will cost about the same as the supplies to sand with a DA.

If the majority of your original paint is good, leave it, it makes a good base.

Damn near all of my original paint is there, i do have to weld in 2 small patches on the metal and i wanted to straighten out some dents and what not and get a good repaint on it

What busman said.