As far as the pre-made wires, most of us buy them from Stormy's Vapor Cellar. They come in 1.2, 1.5, 1.8, 2.2, 2.4, 2.8 ohms so there's a big range to choose from. I use a 1/16" drill bit to wrap my coils and the entire resistance wire gets coiled, not sure how many coils that is since I just coil from length of it. The 1/16" drill bit makes coils that are too big for the ceramic cup so I let my coils ride on top of the ceramic cup. It makes it easier to rewick too. If you want to go to a lower resistance, you have to make the wires yourself.
How high voltage are you planning on using? And how low resistance? The ceramic cup can withstand a lot but it's not for extreme-end (unsafe) vaping.
Come on over to the By Leo thread, everyone is nice there and will answer your questions. We don't bite.
I would have liked to get the sophia with all the positive reviews.. I like the idea of juice control.. But its so much more expensive than the diver.. Its over 100 bucks.. and the diver I can get for 61 with shipping. that is a pretty big price gap.. So judging on the price gap.. do people still recommend the sophia over it?
Another thing.. everyone is into either clearomizers or cloud chasing.. I wish t here was more videos etc on these devices.. I heard with ceramic you can't use too high voltage, or too low of a resistance. Id want to buy the premade no resistance wires and wrap it myself. But I don't know what size coil to build, or what resistance etc. Depending on the size of the coil. might effect wicking etc.. Seems like a lot of variables .. that is why the sophia seemed cool with the juice control.. looked like you could compensate a little. You guys are my only source for information.