I haven't used mine enough to comment on that to be honest. I have only bought the small one to take my logs with me occasionally but use a heavier VVPS at home. I'd inform about others their experiences with the smaller VVPS in the before mentioned thread if you want to get some more feedback on that one. Soldering a cable is very easy imo, if you think you'd be comfortable doing it just go for it. You might gain a new skill that you can depend on for the rest of your life in the process. I believe Dave was going to sell the tattoo-psu cables soon too, but I'm not sure when he's planning to actually stock them.