I just updated to 21.00 Beta 4. The 5150 model with the Presence at 6 is about the same as the real amp with the presence just above 8.
The Dual Rec is much closer this time, but I still wish it was modeled using the solid state rectifiers to tighten it up.
The ‘77 2204 is more similar to the Brit 800 model than the Plexi 2204.
The Brit Silver was modeled from a Lerxst amp, so it’s not the same as a Silver Jubilee and sounds nothing like my amp (much boxier midrange and really dark in the top end). I think the closest I got to my real amp was using the Brit Brown and turning the input trim down significantly.
In the clips I posted, the Presence was set on 10 for both the real amps and the models to show that the real amps had more “cut” with that control maxed out vs the model.