Sorry, but I have to equate cost to trash.
Honestly it is more - Did what you bought help get you away from smoking?
Most of us think the mini's,etc. are junk and don't last. We forget they are very small cig emulating devices. Most are only 90-230Mah with a max recommended 300 recharges. Anything over a few months survival is a blessing for the user. Think in terms of charging 3-5x per day vs. upgrading with backups and charging a few times a week. Instant longevity.
To add, almost anything someone thinks is pure junk will ultimately be the device another has been successfully using for a while.
Also we must consider - What was the manufactures intent for use and how are we actually using their product.
A good example is English automobiles and the fact they never survive American owners but are considered excellent in the UK.
I understand that concept too, but I'm looking for either devices that are extremely shotty (don't work off get go or are scams) or outragous price e cig kits that similar quality models run fraction of the cost. I can't really say V2 helped me get away from analogs due to all the complications I had with them. If I asked for recommendations on buying a device and was looking into getting a piece of crap this thread would be popping right now lol, I just want non recommendable devices list, know taste is subjective everything is taken with a grain of salt, just so if anyone is looking into buying one I can steer them away from the garbage, only purpose.