I currently work with MinePeon, second link, and (sorry) can't recommend it for 24/7 unmonitored usage.
It might be fixed yet, but my config seems to be killed sometimes, the only way to fix the latest crash was
to stop the cgminer service and run it by hand with the config file on chmod 555. this prevents nightly restarts.

after the latest crash, even rewriting the config, cgminer refused to start all the way.
now it's running 24/7 without restart.

MinePeon was the easiest way for me to get used to RaspPi and mining with it, but I will reconfig to pure Raspbian soon I guess.
It's a very nice piece of software but I don't trust it anymore after these downtimes.