I would think if you have to pick one or the other VHS would still be the standard. Most everyone has access to a VHS recorder but many folks still haven't bought DVD players yet. Certainly in organizations they are rare. I know our local club has a TV with VHS but hasn't yet bought a DVD player yet.
If you can produce both that would be great. Personally I would buy the DVD just because they are great compared to VHS.
Mike Hill
H20 #791