honestly all regular style atties will leak as they have the air hole on the bottom...
i have lr atties from the same vendors die very quickly and others last over 6 months, but even the great ones would leak if i over drip. only atty i have loved that wont leak is my trivecca rebuildable from okc. but this is a atty not recommended for use on a ego, as they require
mods that have built in protection(ohm meter option ones are even better). wont leak as the bottom is sealed and the air hole is up toward the top. also since its rebuildable when the coil goes you can have it up and running in a few minutes with a new built coil set at the ohms you want. but this would be better for you if/once you upgrade your
device.
till then hope you can find something that meets your needs