For what it's worth...
The 2.5DC works so-so with the V4L PT and V4L USB Wall Adapter (2.1a), but I get slightly better results with the 2.0SC (go figure) and terrific results with the 3.0SC tank replacement cartos.
I have a huge supply now of 3.0SCs and 2.5DCs, they are the main ones I use as they seem to work equally well on all my mods and batts, and the PT except for the so-so on 2.5DCs.
The 2.5DC works so-so with the V4L PT and V4L USB Wall Adapter (2.1a), but I get slightly better results with the 2.0SC (go figure) and terrific results with the 3.0SC tank replacement cartos.
I have a huge supply now of 3.0SCs and 2.5DCs, they are the main ones I use as they seem to work equally well on all my mods and batts, and the PT except for the so-so on 2.5DCs.