There are lots of other juices around from small businesses whose main focus is making juices. Backwoods Brew and FreedomSmokeUSA.com are the ones with the most tobacco juices.
Re the Tornado - I think that's an Ego - Boge cartomizers are a popular way to vape on Egos. You could use the standard resistance (warm) or the LR 2.0 ones (hotter, uses battery charge faster) or if you can find them, the 2.5's. I use thin clear juices to get the best life out of cartomizers. 20% or less VG and I like juices that are light and leave no flavoring sediment. I fill fully (18+ drops), clean up, then lay on different sides for 15-20min w/ thin juices to make sure every bit of stuffing is damp. While vaping, if the vapor gets a bit dry or light or the carto starts getting unusually warm, I add more juice to avoid singeing the stuffing. I can get 1-2 weeks good use out of a Boge carto. They are very difficult to clean and dry and have work well again - meant to be disposable - so only put juices you like in them.