Every week or so at rehearsal I'm bringing different pedals to try out as a boost for my SV20H rig, and still haven't found anything that beats my v1.3 OCD clone. That one sounds big, full and liquid, just like the amp but gainier, does the early 80s thing perfectly (and is almost dead silent). Interestingly, the RAT, that sounded and felt just awesome with the SC20H I'm also using (the friend that owns the room we rehearse in has one, along with a couple of cabs including the EVH 2x12 I'm used to), doesn't work as well with the SV (it's noisier too). Doesn't clean up as well either. The RAT did the Nuno thing perfectly with the SC though. So yeah, that specific iteration of the OCD circuit is, to me, The One with the SV20H and the EVH cab. The only one that came close was the "Barber" Direct Drive clone, but the v1.3 OCD still beat it. And having used both the SV and SC intensively, the SV still is my favorite of the two, it's a bit fuller and more complex (while the SC has more cut), which makes sense with channels being in parallel vs the cascaded topology of the SC, and has a dynamic response I prefer. A volume box only works if you're a gigging guitarist that needs to knock a couple of dBs off to adjust for the room, it definitely doesn't really work if you're shooting for "bedroom volume".