I have been using Premier, the dark blue. I have a small electric cigarette maker, which has been fine for a long time now--no problems. There is a kind of tubes called Zen, which I like better than Premier. The guy at the smoke shop says that only so many boxes of this Zen are available each month, and sell out fast.
My machine works good with all brands of tubes, and I really don't notice the brand of tube having anything to do with the taste of the cigarette. Something about Zen I like--don't really know why.
My biggest problem was finding a good way to shred the tobacco leaves. I don't want to spend over 100 bucks for the shredders they sell. So I developed a method of making a stack of 20-30 leaves smoothed out. Then I fold this pile into a square pad. Then I cut diagonally with scissors, very thin strips. Then I cut the strips into quarter inch pieces. So I end up with little tiny stacks of strips, and if the tobacco is too moist it is hard to separate the little pieces. So I do this with dry leaves, just damp enough so that they don't break and crumble. At the end I just rub all the little stacks against each other, and all the little strips separate into good size flakes ready for the machine.
Some folks are using the pasta makers with angel hair attachment with some success. I like the Zen tubes, especially the fact they're packed 250 per box. If you can't find them, Gambler brand is really close in taste.