Best quality E-Cigarette

[aklnz]

Hi....
I have been using "Evod" and "iGo4" E-cigarettes.
The batteriesss seem to wear-out quicker that I would like.
Can someone please advise me on my purchasing a good quality
heavy-duty E-cigarette ? (Model, and web address of seller if possible)
Very Many Thanks....
Wishing You a Merry Xmas....
Barry Morgan