2 oz of epoxy weighs the same as 2 oz of CA. Do you really use less of one glue over another? I have been using tite bond a bit more lately and certainly don't think I use less glue with it. Probably a bit more in fact, it's cheaper so I don't tend to be stingy. Epoxy isn't something I use in everyday building - just in certain parts which require less rigidity, strength, flex or fuel proofing. Firewalls, landing gear blocks, tail assembly, various mounting points...etc.