Prior to this I tried a Harley Benton ISO-1AC Pro and while that is most certainly an isolated power supply, lack of isolation wasn't exactly the root cause of my problems, rather common mode currents from the power supply jumping from shield to hot over the cable run towards my amp. Lower quality switched-mode power supplies put out incredible amounts of common mode garbage, at a very high impedance, that impedance is what makes the 115 volts you touch on an ungrounded neutral rather harmless in spite of being rather tingly or even a little painful, but also makes the noise much more likely to make its way from the shield of your signal cables to the hot and then get amplified. Very high quality switched-mode or hybrid power supplies are capable of outputting even less garbage than your average transformer, but being on a budget and data being sparse, the best thing to do would seem to be to try something increasingly rare in the pedal power world: a linear, transformer-based power supply.
The PWT-05 Mk2 most certainly delivers. It weighs almost as much my pedals combined, a good sign considering good transformers weigh a lot. Even with my amp on a high gain setting and a 4.5 metre cable run between the last pedal and the amp, there is no difference in noise floor when I flick the pedal power on, the only very very slight increase in noise is on the guitar end particularly with the volume partially rolled down, and I suspect based on prior experiments with other power supplies that presented with far more egregious issues in this department that my half-defective microphonic overdrive pedal has a hand in that and it may well go away when I find a replacement for that.
All in all if you actually use your amp and not just your pedals for gain and don't have a million high power draw pedals, I see no reason to opt for less than this power supply, there do not seem to be any cheaper isolated linear power supplies on the market, and given that I'm not likely to build a Strymon corner and many analog pedals will handle daisy chaining just fine provided the power is clean (and both a daisy chain and a current doubler are included), I see this power supply serving me well for a long time to come.