The only Marshalls I like are really old Marshall amps, why? Because they sound more American.
Jim Marshall stole the Fender Bassman circuit to build the praised Plexi's and JTM45. All his amps throughout the 60s were just modified Fender circuits, and these are still the Marshall amps that are most desireable. Anyone who says Fender cant do crunch like Marshall needs to check out any Tweed era Fender and have a listen.
And anyone who says Marshall cant do cleans should try out a Marshall Club & Country combo, does a great 60s Blackface Twin Reverb tone (but once again Jim Marshall just copies a Fender Circuit). This was SRV's clean tone for the majority of his career, his drive tone actually came from two cranked blackface Fender Vibratones, with his clean tone being predominantly his Marshall Club and Country! Go figure.