This is the best budget power supply on the market just now. I've been gigging with it for over a year now and it's never failed me. But, as with all non-isolated power supplies, you're going to get a certain amount of electrical hum when running all the power outputs together. If you want to cut out the hum, it's a fully isolated power supply and a massive jump in price.
Not such a problem for the live environment, where there's always going to be noise anyway, but you do tend to notice it in the recording studio.
I actually ran 2 pedals through the one output with this power supply and it still held up fine, so even though it's cheap, don't have any doubts about reliability, as this power supply can take it. It comes with both EU and UK kettle leads and in the event that it is accidentally overpowered, your pedals won't be affected. It is reasonably bulky but again, for the price you really can't complain, and for me it wasn't a problem as my power supply sits underneath my pedal board anyway, so the space wasn't an issue. Please be aware that one of the 12v outlets is AC rather than DC.
All in all, a great power supply for the price, and super reliable.