can most any switching power supply noise not be solved with enough toroids and ferrites?
I use both.
Currently I'm using a 30A Jetstream switcher. I haven't really noticed any noise on it. That is connected to the shack radios.
On my test bench I have a pair of 60A Tripp-Lite power supplies married together (1 control board controlling all pass transistors) for 120A. I also have a homebrew 600A benchtop supply (iron based, weighs in the hundreds of pounds).
Whatever I have on hand. I don't buy junk, so it doesn't matter which kind of power supply I use.
I do notice in 30 years of using switchers in PCs, ham shacks, helping CBers with their stations, etc. that switchers have a lot (I mean a LOT) more breakdowns. And when they break, it's better to usually trash them.
I also use an external crowbar via back to back zeners so when they fail, if they fail with 120 on the output, they blow a fuse instead of blowing up my unobtanium 2879 finals.
--Shane
WP2ASS / ex KD6VXI