I have the MXR ISO brick M-238 and used it for several years. It is loaded with everything I needed, handled 9v and 18v pedals, all different mA ports I needed. Worked great. It didn't solve every noise problem, it's not a miracle box (some live setups are quite complex and difficult to trace every problem), but it worked as advertised and made individual pedals run correctly and sound their best. Even had a couple ports that let you simulate a dying battery by attenuating the voltage. $59 is a screamin' deal. I think I paid $129 for mine.