I somehow only just learned that daisy chaining all of your guitar pedals with the same power cable can cause extra noise. I don’t have that many pedals right now which is probably why I didn’t notice it.
I recognize it’s probably more important for recording than for live playback, but are isolated power supplies worth it? It’s a hefty price to pay.
Like you said it’s important to reduce noise during recording. It does build up when you have more pedals especially big digital ones. If you’re just playing with a few pedals and don’t notice significant noise you’re probably good for now.
I do think it’s a good investment if you plan to get more pedals simply for the fact that many of them have outputs that allow you to power bigger pedals or switch up to 18v for pedals that support that.