The lyceum in BRD is nice. With RAF you can get your Vet there easily then chain summon down. Mobs are worth ~100-200 XP each, have around 600 HP and as long as you don't put out the flame will spawn forever. On my prot pally I was able to do around 100k an hour per toon with RAF in the low-mid 40s. You will need blessing of freedom.

I did this with 1 70 and 2 mid 40s RAF linked toons.

I also found that at 40-45 quest XP starts goes crazy and I was easily doing 150-200k an hour all the way to 60, which was faster, less boring and helped me learn classes new to me. I also felt the lyceum was a bit "borderline".

edit pre-coffee spelling