Thanks for taking the time to separate the topics - hope my suggestion didn't come off as too harsh, but it's just for the sake of maintaining clarity now, and future reference when others search the forum.
This is actually one of the simpler topics to address. In short, no, there's no meaningful difference in effect on noise suppression. Best to choose by ease of application and durabity.
If we were talking about highly sensitive equipment with circuits operating in the mega or gigahertz frequency range then materials, layouts, mesh size, etc, can certainly affect results. In the range of hertz to a few kilohertz we're working with though (extremely low frequency in terms of typical shielding concerns), there is no appreciable difference - they all do a pretty mediocre job.
Several years ago I got curious about this myself and devised a somewhat crude but reasonably effective test rig for this. I wound a simple receiver coil, mounted it in a box, an set up a slide channel with a contact spring to slide plates with different shielding materials between the noise source and the coil.
For noise sources I used various fluorescent lamps, transformers, computer monitors (this was before we had flat screens) at various distances. Most of the tests were simply listening, coil plugged in to an amp as I slid different plates back as forth. I did plug it in to some FFT programs to look for changes as well, but did not record any data. It was admittedly a fairly quick and crude test with nothing calibrated or measured, but I believe still served as a reasonable comparison with for this application with good controls and instant change for real time comparison.
With the materials I tested (.003" copper foil, kitchen aluminum foil, metal HVAC tape, and nickel based shielding paint in single, double, and triple coats) I found no appreciable difference at all. They all suppressed a bit of noise, but none could come close to blocking it out entirely.
Now as I said, this changes with more complicated circuits, so if you are running an active system and need to block out radio or microwave frequencies then it may make some difference. For standard passive guitar electronics and extreme low frequencies we're fighting to block, I don't believe there is any difference until your shielding plates approach thicknesses of inches rather than thousandths.
So my advice is not to worry about it too much, but just use whatever is easiest for you.
And welcome to the forum!