Hi there,
I recently ordered the ODROID-U2 ( http://www.hardkernel.com/renewal_2011/ ... 5341370451 ) from hardkernel and managed to get Gentoo running on it. That thing is awesome fast! And USB is much more stable than on the RPi. I used my Edirol UA-101 external audio interface with jack for more than 30 minutes w/o any problem (It didn't work AT ALL on the RPi).
Image to download and some more info (including nbench numbers) is here: http://odroid.foros-phpbb.com/t2242-gen ... for-the-u2


