Personaly the more delicate the fish is the more I like drip acclimateing.. knock on wood. I've never lost a fish from shock from drip acclimation. I like to put the fish in a dark container, to minimize stress. Add an air stone. and do a 2 hour plus drip. may be overkill... but I use to have very nice african/SW water.. high PH hard as a rock. And kept many low PH species due to careful acclimation.
I'de also have a test-kit on hand to get a solid reading on the PH/ ammonia ect in the bags when you get them.