As some of you will know I've got the Vaporesso Gen Nano and had massive problems with the GTX22 tank.
The mod itself is excellent. It's light, intuitive and nicely textured, but the GTX22 tank it comes with has been gurgly, leaky and, I feel, poorly designed, so much so that I've now 'downgraded' it to the GTX18.
Today is my first day with the new tank so it's early days, but I can already tell it's a far better tank than the 22 with none of the aforementioned problems. No gurgling, spitting or so far, leaking. So far it seems massively better in every department and has let me enjoy the experience far more.
This was a great decision to make and is the making of an already excellent and unproblematic mod.
All in all I can thoroughly recommend the Vaporesso Gen Nano to you and your wife, just with the GTX18 tank, not the stock 22.
Peace, love and happiness to you both.