I use the Zuma to power my pedalboard (Rockboard) containing a Shure reciever, El Capistan, Volante, Ego Compressor, Tumnus Deluxe, Steel String and Ultraphonix OD.
It?s noise and humfree and provides more than enough power for most peoples use considering most pedals apart from delaybased stuff needs 30mA or less.
Pros: noisefree power
Cons: apart from maybe the price - none.