I've got one of those triple output power supplies sitting next to me at the moment, so shout if you have any specific queries!
Although the readouts aren't very hackable, the rest of it is. For example, it comes with the current limit adjustable from 0 to 5A in 50mA steps. On one of the supplies (the one on the right), I have modified it to be from 0 to 1A in 10mA steps - that's much more useful. Of course you can turn off the current limit and get the full 5A if you need it.
No complaints here - I'd recommend it.
Andy