some times they forget to update some of the middle man stops a package makes. or at least that is what I have noticed. the more I read and watch about these things the more I am tempted to pull the trigger...even though I really don't need to spend that kinda cash right now...I thought about a lava tube but all of the reviews I have watched say they suck .... on LR and dual coil stuff...which just so happens to be my whole arsenal except for 5 carts and 1 atty. and seeing as how most of the carts I have are unused it would not make sense to buy all new stuff just to make the lava tube better.
The only two (that i have heard of, theres probably allot of them) Variable Voltage Mods/pv's that will handle dual coil carto's very well is the Provari, and Buzz Pro. the buzz being the cheaper of the two, but i really wanted the options, look and reliability of the provari, i bought the provari because i can't be spending money on tons of mods just to do it, so i figured 1 high end durable mod, with the options, safety features and definitelly Variable Voltage. Which all added together turned out to be the provari.
Theres allot of good stuff said about the buzz pro though, even a youtube video of it handling dual coil carts better than the provari aparently.