dude i have an original mid 70's MXR distortion script If u want. George is correct, its really almost the same circuit as the DOD, but the DOD has a boost/preamp which gives it a fatter/bigger sound and it does have more gain, but can get mushy if turned up all the way. I do think the DOD is a bit more transparent and not as compressed as the MXR +. As far as the MXR Stereo Chorus, i owned the original and it was stolen but honestly in my opinion it only sounded great when run in Stereo two fender clean amps. Eric Johnson used one way back in the 80's. I think Barzini owns a reissue so he can give the scoop on that. PM me and we can talk to details, also i still have the PQ-3 that u wanted too if u wanna check that out too.
Ant