[WTA] What is the good development kit to learn RTOS?

ksatria

I'm starting to learn RTOS (any RTOS for the start), and willing to buy FreeRTOS NXP LPCXpresso LPC1769 Education Kit for starting point as it come with hands-on guide for RTOS, and 'cheap' price.

Any body who have bought that kit, would you like to comment whether it is good?
Or, any suggestion what others development kit that good for beginner to start learning RTOS? (using ARM processor is preferred).

And I also have STM3210B Development Board (please use google translate as I'm not understand Mandarin Chinese as well ), if any body can suggest me the book (or any learning source) that can utilize that board to learn RTOS (any RTOS is ok as long as it's free ), I really appreciate.

Thanks!