For his third birthday, Aias got the LEGO Passenger Train from us and the LEGO Cargo Train from Oma and Opa. He's wanted these for a very long 6 months. We would see them at the store and he would stare at and hug the boxes. He just about fainted when he opened them and made Morgan get right to work building.
I can't say enough awesome about the Cargo Train. The Passenger Train is pretty rad, but the Cargo Train is an insanely good value. It comes with many vehicles and also... a crane! A huge deal to a small child.