We suggest keeping a Battery strap with a 2.1mm end on it as a testing device for such occasions. Whenever you have a noisy pedal then you can break that out first and test your pedal with a battery since they never produce noise. I actually forgot to mention that and it is a very helpful tool. Thanks for reporting back and enjoy!
For isolated pedal power I use a Voodoo.
As for a power strip I use these: