Quad Core Arm Computers

I have always been fascinated with small computers.  I have a Chumby, some ZipIt Z2s and I had a plug computer that recently died.  I’ve been considering replacing the plug computer with a small Linux arm computer.  My prerequisites are: Wired Ethernet, Silent, Low Power, ability to host source control and ssh.  Video output would be nice.  I have been hesitant to spend too much, because I have previously bought them and barely used them.  So far I have seen two contenders, NanoPC-T1 and the ODROID-U3.

I am a bit of a tech hoarder, so I have to liquidate some previous older computers before I buy anything new.