Carnival Party Quest is fast and has good experience(Maple Story Meso) for levels 30-51. Bandits around level 30-35 do not get into CPQs as fast as other classes due to low level Savage Blow and low damage. The time spent trying to get into a CPQ may not be worth the rewards. If you can not get into a CPQ, you should do LPQ.
Level 30-34 in Maplestory: Ant Tunnel. One double stab should kill Horned Mushroom and sometimes Zombie Mushroom in one hit. Training will be a bit slow, but it is now bear. If you can not bear it, you can try to kill two evil eyes, in the lush forest and marsh land, three pairs of thorns. Than the angle in the import and export of mushrooms and zombie mushrooms better, but will burn your medicine and so on.
If you want to burn more potions, you can go to the Swamp of Despair I. There are more monsters will drop medicine or equipment or rare items, but training will be a bit difficult. If you do not want to burn, you can resume training to Muslim skull ah hit it as long as the Congress building. Carnival party quest, is also a good choice, although a party may be a bit difficult, this is the best level(Maplestory powerleveling) of experience of about 45. Level 30-35: Mushroom Kingdom. By completing all the quests there, you not only level up while doing the quests, you also get quite a large amount of EXP. Doing so, you should be able to get to 35 pretty fast.