I would wait a few months for the new Marlin XT22 youth models to start shipping.
http://www.marlinfirearms.com/Firearms/xt/default.aspAccu-style trigger as on the X7 centerfires, Synthetic stock desgin with a close grip for kids. And American made.
Hard to beat at less than $200.
Click on the YR and YSR models with the synthetic stocks.
Cool rigs for kids.