There are some fights where I can't align Stampede with Heroism (Bloodlust/Timewarp/Hysteria), either because of my own blunders, or because it's used when it gives most benefit for raid overall, but not for me personally...
So, in those cases, is it more beneficial to use the potion during Heroism, or during Stampede? I was wondering if anyone calculated it. Personally, I'm leaning towards Stampede for BM / Heroism for SV.