DoM/W leves slow down the lvling process imo. Find a good camp for your lvl and just kill kill kill. Even if you get less exp per mob, you can kill faster, create higher chains and get more exp per hr. The nice thing the devs did is that in one zone there will be mobs of different lvls near each other. So you can just run around the corner to higher lvl mobs when your exp gets sucky. Although I will admit leves 40+ can be good for DoW/M, esp GC leves that you dont need to constantly return to town to get more of.

Better yet get/form a pt and lvl up even faster.

I personally only use leves for DoH/L. So much faster for the most part over farming mats and then doing standard synths.