Suicide, in my opinion is the best way to maximize your XP gain. Minimum potions and Reckoning=More XP. Even cutting out SSI to improve chances of Reckoning to hit on Conserve, AL or Lib. Use a high comp pot with Ke, SH CoAt and Use EW for your damage/attack stats. Then overkill, sacrifice and pvp prestige.
Reckoning does not impact on SSI, Doubler, Global Boster or Counter Attack.