But (my) feelings do not seem to be a good guide here...
Well, except when you are an electronics god, feelings AND measurements are both tricky things. They both betray you. Doing measurements right is so difficult that I am very cautious when it comes to that. I know that I am no expert and that I am likely to make a thousand mistakes. So, that's why I usually don't try to measure high-performance equipment, because for that I would need to be high-performance myself
Always the same story.
If you want
- very low noise (350uV RMS, 1-2mVpp)
- high stability
you get
- linear mode
- low efficiency
If you want
- high power
- high efficiency
you get
- high ripple and noise
- switching mode
For sensitive analog stuff, like bridges, low noise amps, VCOs, sensor circuit,, detectors, ...
- get a linear to save you a lot of grief
For bread and butter analog or digital
- get a switcher
My choice:
- Rigol DP832 (just look at ripple and noise) for normal stuff (400$)
- Keysight B2962A with filters for real sensitive stuff (AttN: 10K$)
NGXX and Keysight "cheap models" are 1-2K and still noisy.
Dont see why they are attractive from the specs. Pay 2-3 times the price
for just the name with worse specs than second row ? Why ?