OLinuXino (Multiple models: IMX \233 Maxi, Micro, Mini, MiniWiFi, A13, A13WiFi)
https://www.olimex.com/Products/OLinuXino/
MK808 (Updated MK802)
The RaspberryPi Model B has been upgraded to 512mb RAM.
Several other devices mentioned in http://www.reddit.com/r/linux_devices