Where do you recommend artifact-hunting?

EXP reward is freaking retarded... 550 k EXP? in my level is over 15 %. Acording to Spadow the EXP should be only the 10% of the level...

Wait wait wait. You're getting 550K EXP as well? Holy crap I thought the EXP reward was based by level. I got 550k on my 132 Mech. That means...... I can power level my Dawn Warrior to 70 in mere seconds!