raron, both can yield excellent results if applied correctly.

#1 Clean the area throughly. rub with alcohol, then use 100grit sand paper to scuff the mating parts, then wipe again with alcohol.
#2 Mix epoxy thorughly. Mix that thing for a good while, and then some. Add milled fibers if you have some.
#3 Apply force when curing. This could be hard to do depending on the location of the bulkhead. I have used tiny screws to attach the former to the fuselage, and cover the holes later.
#4 Make nice glue fillet all around

That being said, 30 min epoxy should work fine. I use Hysol E20HP a lot too, it is great! If your fuselage is Polyester, Hysol works better.

David