i've only used that so far so i can't compare it with other adaptors. i would say based on personal experience and reviews from many people, the 1spot is a reliable unit for powering normal 9v pedals.
+1 to that..
one spot by visual sound.. and get a daisy chain..
if not you can get those power brick thingys to power up your pedals?
or some pedal boards come with their own power supply..
i dont recommend the powerbricks at all, unless its a voodoolabs pedal power, the rest are pretty much isolated and cost much more than a onespot while basically being the same thing. an unisolated powersupply.