Bite Stone/Edge vs Bite/Crunch

B/C so you can destroy some mewtwo =)

I have both sets. For my play style I prefer B/SE, feels quicker and super effective on more pokes currently (and when those legendary birds come out). B/C I think edges out in damage non-super effective (tend to use this set more on Bliss, but when that Lugia/Mewtwo come out though!) Lol.

SE is quicker and outputs more damage. I have 4 tyranitars and they all have crunch even after rerolling a FB one. Well I'm just happy I no longer have FB on a tyranitar.

For current lvl 3 and 4 raid bosses still SE one, a lot better for the 3 fires and marginaly inferior for Alakazam and Gengar. Amso for Jolteon SE is marginally better.
I'm talking from a pure dos perspective, but SE is also better for disge if by some reason you want to dodge during raid fights.