I like the original weldwood because I found the same size can didn't go as far as the gel. I've never used Barge again because the price seems to be higher per quantity. That begging said I've only found tubes, so maybe in a larger quantity the price is competitive.
Also, the method I prefer to apply the glue is to use a 2-21/2".x 4" piece of 1" foam as an applicator. Dip the foam into the glue just about 1/4" or less. Let the glue soak into the foam until the surface is not as shiny. They apply to both surfaces. Allow both surfaces to become tacky then join.
Make sure to use gloves. Use the product outside and possibly with a chemical rated mask if sensitive. This stuff is highly flammable. The fumes will travel across a room and find and open flame very quickly. Safety first!

Julie