The Actions chipsets are cheapish but SLOW. I think you should go with a Rockchip design with a 1.8 or 2 inch screen.
Also, there is no difference between Samsung or Hynix memory chips, they'll be limited by the controller in the chipset anyway. :P
__________________
For my dreams i hold my life...
I miss my Meizu M6SL... Currently rocking a Sony Ericsson w595 on Samsung in-ear phones. Does fine, but it's not a chipod...