But I mean it does look like a good deal. I haven't seen a kit available with a tube take, that's pretty cheap all things considered with the tank, and extra atty. Although, the tank is duel coil. If her Lava Tubes have the built in safety feature (Don't they all?), you won't get more than 3.7 volts on that most likely. That's not a very powerful vape.
Idk, I just don't see the point of duel coil and low res attys and cartos, when you have a device capable of 6 volts output. Aren't those devices meant to make lower voltage (nonvariable) mods vape like they run at higher voltage?
Thoughts from a new LavaTube user (and new vaper). I got a LT as my first "proper" PV after I used minis. Get the LT that tells you the resistance of your devices, the one linked earlier from Pennies looks like a good price. DON'T get the earlier versions (like the ammzon one linked just above) as they aren't quite as good (basically knowing the *actual* resistance of your atomiser lets you set the voltage to get the power that you like to vape at accurately - some say they are X on the label but are actually a little out.
the point of VV is being able to control the Watts (Power) that you vape at. The 'sweet spot' of power varies a little according to user preference, and the juice being vaped, but it's usually around 9watts. 3.7 running a 1.7ohm dual coil gets you to 8watts ish which isn't quite high enough but is reasonable.
I'm using a ViviNova tank with a 2.4 head on it which gives me a really nice vape. A carto tank will mean you need to either buy pre punched cartomisers, and/or punch/slot your own cartos, which is easy enough to do but something you need to consider. You need to drip into atomisers all the time which I find is a PITA.
The build quality on LavaTubes is OK. It's not great, but then at the price you pay for them it's perfectly acceptable. I'd like to upgrade but I am not about to spend huge amounts on a ProVari anytime soon, I'll probably wait for the next generation of variable wattage devices before I spend that much on my next mod (and wait for the money I'm saving vaping compared to smoking to stack up a little first)
tl:dr. Buy a newer version LavaTube that shows the resistance of your device, and run single coil standard resistance heads on it to get the most out of it. Dual Coil and low res setups don't work as well on a LavaTube as a standard type of head setup will.