Great investment to improve sound!
Have been putting my pedalboard together for several months and using a Truetone 1 Spot 9V supply with daisy chain to all pedals - 11 pedals in all now. Was very happy with that choice as the number of pedals grew, and really didn't notice much change in noise level during the expansion - it's a great product with 1700mA output!
Being that my board includes two Xotic pedals that could run on 18V (EP & SL) and a BB Plus that could run on 15V (actually running @ 12V), the CS12 was purchased to take advantage of the extended headroom of these pedals at higher voltage. MAN, WHAT A DIFFERENCE!! Not only did these sound better, the truly isolated supplies to all pedals cleaned up what little noise there was and the entire rig sounds much better.
HIGHLY recommended product!! Not all power supplies are created equal, especially when it comes to "isolated" supplies - the Truetone 1 SPOT PRO CS12 is the bomb!!!