Uter, Hippy or Jesse?
Jesse Grass can do all the recycling and railyard tasks with 50% extra materials. He also has a funny visual task at Krustyburger (granted its only for the 60 minute one).
Forum Discussion
If the purpose of your purchase is for the Monorail, then there is no question that Jesse is the best choice. He is the only character that will give you premium payouts for all currencies.
