In this video I compare the Marshall SV20H and SV212 to basically all the usual alternatives and discuss pros and cons of each choice. These amps and cabs include: Marshall 1987X, Studio Silver Jubilee, DSL20HR, '71 Super Lead, '73 50W Lead, '71 1960A (Pulsonic) '71 1982A (Pulsonic), '85 1933A, '70 1972B 2x12.
SV20H with different settings:
https://www.youtube.com/watch?v=RfUEps2L5ko
DSL20HR with different settings:
https://www.youtube.com/watch?v=jOLRTNCKpnY&t=4s