Just about any metal detector would work for meteorite hunting. From what I know, meteorites have a high iron content and so you would be looking for low tones/VDI.
Problem with that is, if you are looking for iron, I assure you that you will find iron, and lots of it. Meteorite hunting is not nearly as glamorous as it looks on those TV shows (unless you live in a prime area with strewn fields and not much trash).
If you will only be looking for meteorites, you can throw VDI's out the winder to begin with as they each meteorite is an individual, with a different size, shape and chemical makeup. You will have to dig a lot of meteor-wrongs to find a meteorite.
I would start with setting the Deus in zero disc and then I would get some meteorite samples and seeing what they sound like and ring up as and go from there.
Sorry I don't have more info but your taking on a pretty interesting endeavor there.
Do you live near a strewn field?
Hope this helped -Marc