DC Modern SOD is now my favorite amp sim. One of the member on the forum has recently posted a pdf file with the pics of all the actual amps modelled after. For the DC Modern SOD amp sim, it shows the Soldano SLO100 head, maybe a hot-modded version of the Soldano.
If I remember correctly, the Chimp over on the DUC forums (he works for Avid on the 11Rack) said that the DC Modern SOD was it's own beast, but it was kind of a hybrid loosely based off of the Marshall JCM100 and the Soldano SLO100.
When the Expansion pack first came out, the DC Modern SOD was an instant favorite of mine too. I even did this quick little demo of it that same day.... 7-String Rig