I don't think the JCM2000 gets near the respect it deserves compared to models like the 1959 Plexis, 1987s, 1974s, JTM45s, Jubilees, and JCM 800s. I have played a bunch of Marshalls and if you need one amp to cover the entire spectrum at all volumes the DSL100 is IT. The only gripe I have is reliability, but in my experiences most Marshalls have to be fixed from time to time anyways. I really like the JCM800s but to be honest they don't seem to have as much gain, crunch, or low end as the JCM2000. To approximate the JCM800 sound on a DSL you can back the bass to like 4-5, treble noon, mids 7-8, presence to 3-4, gain 4-5, volume to taste on the Lead 1 channel. Oh and midshift off, deep switch off.
'67 and '74 Fender Twin Reverbs, '74 Marshall 1987 lead mkII, Metro Superlead 100. Pedals from TC Electronic, Ibanez, Dunlop, BK Butler, Electro-Harmonix, Fulltone, Maestro/Gibson, Loopmaster switching, VoodooLab, Boss. Gibson and Fender guitars, Dimarzio pickups.