I plan to buy an oscilloscope for use in my power electronics MBA course. I will use it mainly to design SMPS's, not professionally for now, but with professional quality.
If I were to choose between 12-bit resolution 20 MHz bandwidth and 8-bit 100 MHz, which one would be more appropriate for this application?
Is 8-bit resolution enough to clearly see mains filtering ripple?
Is 20 MHz bandwidth enough to detect most problems in a switcher operating in the kHz range?