I have been using Potion of Speed usually, and occasionally Potion of Wild Magic when im out of mats for Potion's of Speed.
So whats your guys' opinions? I'm pretty sure Potion of Speed is better, but 20% haste coupled with 30% from BL, and even more from the lights on Hodir, im not 100% sure if its true.
I would say keep using the Potion of Speed. The SP boost from Wild Magic does nothing for you and I'm not sure if 4%crit is a bigger DPS increase over 20% haste since you already have a crapload of crit.