From what I have observed over the years in regards to Epoxy vrs Hysol is that Epoxy has a tendency to shatter like glass when forces are applied...where as Hysol has more of a very hard plastic characteristic that gives(to a point..) when forces are applied.

I use a lot of Hysol E-20HP. Cures in about 2hrs, is Clear, Fuel Proof and only cost $11 per tube. Sorry I dont recall the name of the company that sells it.. but there in Michigan and 10 tips are only 5bucks