What parts of it do you need?
A lot of the devices on the board are 3.3V only - the SD socket, the XBee socket, etc.
What portions do you need?
My Bobuino board has 5V IO, DS1307 battery backed clock, RS232, shield headers, extra IO, with seperate 3.3V regulator & level-translated signals for the an SD card.
But if you need the battery charger, it doesn't do that.
So what features do you need?