Well, I'm not sure about resistances (I ordered Standard, but since I don't have a multimeter....) on the ones I got, but I got great flavour and throat-hit from relatively low voltage, even pre-mod. I found that any higher than about 4.5 volts gave me consistent dry, burnt hits.
Post-mod, I'm holding around 4 to 4.2 maximum, or (as I put it somewhere else) I feel like a miniature Rocky has been using my uvula as a speed-bag.