suggest me an development board that supports linux,android,rtos porting ??

Hai guys ,

i want to purchase a development board to port linux , android and rtos . can anyone of you suggest me the right one ?? after surfing through the internet i found S3C2440 suits my requirement . is anything better than this ?
if it has support in yocto also is an added advantage .

please suggest me the good one.

Thank you in advance