Levels 1 to around 43 I'd say just do Quests and run dungeons and be sure you have the EXP Hyperchip active. 44 - 49, you can just kill RP mobs an hour per day with the EXP hyperchip active, run BGs, and you can hit 49, at least that's what I did without using the power leveling method. 49 to 59, quests and Giants in Ellis with a party. 60 to 65, Dragon Valley party.
This assumes you're not being power leveled.