Grab It While You Can!
I've only had this tank for a few weeks. For the last 2 years I've been using the 2ml ones. So far so good. I love the extra capacity and more imortanty it's easier to refill then the 2ml tank. The main problem with the 2ml is that the coil can get stuck and it's a bit fiddly to juggle the tank with a bit of liquid that you're trying not to spill whilst unscrewing the coil then putting it in the base hardware and then refill. None of those issues with this and again really important, I don't have to struggle trying to refill it due to the capacity, which I absolutely love.
It's a pity that these 5ml tanks are end of life. So I'd recommend grabbing a few and the replacable ancillary equipment (seals, base hardware, etc) while you can.
Build quality is good, ease of use is good and I'm very happy with it.
Verified purchase: YesCondition: New