Embedded Board for Beginners: ARM9 S3C2440 or ARM11 S3C6410?

I’m a Electronic and Information Engineering student and I’m eager to expand my knowledge on embedded programming and electrical engineering. I am looking for an embedded SBC board. But I am hesitant to choose which one to beginning. I found two cheap SBC on www.boardcon.com——EM2440-III , SBC6410, there are rich source for EM2440-III, but sbc6410 seems more advanced. Please give me some advice

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