When the plans call for epoxy, they are telling you it is a very critical joint. Epoxy is just about guaranteed to hold but it can get heavy if you use too much.

If you make close fitting joints in the wood, then carpenters or Ca will be adequate and has the advantage of being lighter and sandable (except for Ca).

I like the yellow Elmers. As it dries half the weight disappears due to the water evaporation. That's not true of epoxy which weighs the same after it dries.

Tom